Quiz about Project 800

Question 1

800.M.1

What is 10% of 470?

Accepted Answer

47

Answer

37

Answer

57

Answer

67

Question 2

800.M.1a

What is 15% of 320?

Accepted Answer

48

Answer

42

Answer

32

Answer

67

Question 3

800.M.1b

Oliver is saving money to buy a new video game. He has saved 470 dollars so far. What is 10% of his savings?

Accepted Answer

47

Answer

57

Answer

37

Answer

67

Question 4

800.M.2

Which equation has the same solution as the given equation?

4x+6=18

Accepted Answer

4x - 6 = 6

Accepted Answer

2x + 3 = 9

Answer

8x - 2 = 14

Answer

4x + 6 = 12

Question 5

800.M.2a

James is buying apples.

He finds that 4 apples and a $6 packaging fee cost $18 in total.

Which equation represents the cost of just the apples?

Accepted Answer

4x = 12

Answer

4x + 3 = 18

Answer

4x + 6 = 12

Answer

4x = 18

Answer

6x + 9 = 18

Question 6

800.M.2b

James is buying apples. Each apple costs $4, and he has a $6 discount. If his total bill is $18, how many apples did he buy?

Accepted Answer

6

Answer

5

Answer

4

Answer

7

Answer

8

Question 7

800.M.4

The function of g is defined by g(x) = $$x^2+9$$ . For which value of x is g(x) = 25?

Accepted Answer

4

Answer

-5

Answer

-3

Answer

3

Answer

5

Question 8

800.M.4a

The function of h is defined by h(x) = $$x^2+16$$ . For which value of x is h(x) = 52?

Accepted Answer

6

Answer

-5

Answer

-4

Answer

4

Answer

5

Question 9

800.M.4b

The function of f is defined by f(x) = $$x^2+4$$ . For which value of x is f(x) = 29?

Accepted Answer

5

Answer

-4

Answer

-2

Answer

2

Answer

4

Question 10

800.M.5

Each face of a fair 14-sided die is labeled with a number from 1 through 14, with a different number appearing on each face. If the die is rolled one time, what is the probability of rolling a 2?

Accepted Answer

1/14

Answer

2/14

Answer

12/14

Answer

13/14

Answer

1/7

Question 11

800.M.5a

Each face of a fair 20-sided die is labeled with a number from 1 through 20, with a different number appearing on each face. If the die is rolled one time, what is the probability of rolling a 5?

Accepted Answer

1/20

Answer

2/20

Answer

5/20

Answer

19/20

Answer

1/10

Question 12

800.M.5b

Each face of a fair 20-sided die is labeled with a number from 1 through 20, with a different number appearing on each face. If the die is rolled one time, what is the probability of rolling a multiple of 3?

Accepted Answer

6/20

Answer

6/10

Answer

5/20

Answer

4/20

Answer

3/20

Question 13

800.M.8

A teacher is creating an assignment worth 70 points. The assignment will consist of questions worth 1 point and questions worth 3 points. Which equation represents this situation, where x represents the number of 1-point questions and y represents the number of 3-point questions?

Accepted Answer

x + 3y = 70

Answer

4xy = 70

Answer

4(x+y)= 70

Answer

3x + y = 70

Answer

x + y = 70

Question 14

800.M.8a

A student is designing a quiz worth 50 points. The quiz will include questions worth 2 points and questions worth 5 points. Which equation represents this situation, where a represents the number of 2-point questions and b represents the number of 5-point questions?

Accepted Answer

2a + 5b = 50

Answer

5a + 2b = 50

Answer

a + b = 50

Answer

2a - 5b = 50

Answer

a - 5b = 50

Question 15

800.M.8b

A student is planning a test worth 60 points. The test will include questions worth 3 points and questions worth 6 points. Which equation represents this situation, where x represents the number of 3-point questions and y represents the number of 6-point questions?

Accepted Answer

3x + 6y = 60

Answer

6x + 3y = 60

Answer

x + y = 60

Answer

3x - 6y = 60

Answer

x - 6y = 60

Question 16

800.M.9

Right triangles LMN and PQR are similar, where L and M correspond to P and Q, respectively. Angle M has a measure of 53 degrees. What is the measure of angle Q?

Accepted Answer

53 degrees

Answer

30 degrees

Answer

60 degrees

Answer

45 degrees

Answer

90 degrees

Question 17

800.M.9a

David and Charlotte are building ramps for a skateboard park. They create two right triangles, PQR and STU, that are similar, where P and Q correspond to S and T, respectively. Angle Q has a measure of 45 degrees. What is the measure of angle T?

Accepted Answer

45 degrees

Answer

55 degrees

Answer

35 degrees

Answer

60 degrees

Answer

90 degrees

Question 18

800.M.9b

Scarlett and Priya are building two similar right-angled ramps, where the base of Scarlett's ramp corresponds to the base of Priya's ramp. The angle at the base of Scarlett's ramp measures 37 degrees. What is the measure of the corresponding angle at the base of Priya's ramp?

Accepted Answer

37 degrees

Answer

53 degrees

Answer

45 degrees

Answer

60 degrees

Answer

90 degrees

Question 19

800.M.10

y = -3x

4x+y=15

The solution to the given system of equations is (x,y). What is the value of x?

Accepted Answer

15

Answer

1

Answer

5

Answer

45

Question 20

800.M.10a

y = 2x

3x - y = 12

The solution to the given system of equations is (x,y). What is the value of x?

Accepted Answer

12

Answer

2

Answer

36

Answer

24

Question 21

800.M.10b

Emma is planning a party and wants to buy twice as many balloons as the number of guests she invites.

She also knows that the total number of balloons and three times the number of guests equals 14.

What is the number of guests Emma is inviting?

Accepted Answer

4

Answer

2

Answer

36

Answer

24

Question 22

800.M.11

What is the equation of the line of best fit?

Accepted Answer

y = -25x + 170

Answer

y = -5/8x + 170

Answer

y = 25x + 170

Answer

y = 5/8x + 170

Question 23

800.M.11a

Kindly match the correct correlation to the scenario

"The amount of time since a movie was released and the number of tickets sold"

Accepted Answer

Negative Correlation

Answer

Positive Correlation

Answer

No Correlation

Question 24

800.M.11b

Kindly match the correct correlation to the scenario

"How tall a person is and how fast they drive"

Accepted Answer

No Correlation

Answer

Positive Correlation

Answer

Negative Correlation

Question 25

800.M.12

Accepted Answer

Three

Answer

One

Answer

Two

Answer

Four

Question 26

800.M.12a

What are the x-intercept(s) of the parabola shown on the grid?

Accepted Answer

(1,0) and (3,0)

Answer

(-1,0) and (-3,0)

Answer

(0,-3)

Answer

(0,1) and (0,3)

Question 27

800.M.12b

Name the x-intercept(s)?

Accepted Answer

(0, 0) and (4, 0)

Answer

(0, 0)

Answer

(2, 4)

Answer

(0, 0) and (0, 4)

Question 28

800.B.1

What percent of those that prefer Instagram are

girls?

Accepted Answer

59%

Answer

45%

Answer

22%

Answer

52%

Question 29

800.M.15

Bacteria are growing in a liquid growth medium. There were 300,000 cells per milliliter during an initial observation. The number of cells per milliliter doubles every 3 hours. How many cells per milliliter will there be 15 hours after the initial observation?

Accepted Answer

9,600,000

Answer

1,500,000

Answer

2,400,000

Answer

4,500,000

Question 30

The original value of a painting is $1400, and the value increases by 9% each year. Write an exponential growth function to model this situation.

Accepted Answer

y=1400(1.09)^x

Answer

y=1.09(1400)^x

Answer

y=1400(.91)^x

Answer

y=1.09x

Question 31

Which of the following functions shows an initial amount of $15 and an increase of 35% each year?

Accepted Answer

y = 15(1.35)^x

Answer

y = 15(35)^x

Answer

y = 15(0.35)^x

Answer

y = 35(1.15)^x

Question 32

The function to find the value of a car after t years is given by v(t) = 24,000(.75)^t Which of the following statements is true?

Accepted Answer

The starting value of the car was $24,000.

Answer

The y-values of the graph increase as the x-values increase.

Answer

The value of b indicates this is an exponential decay situation.

Question 33

Some banks charge a fee for a savings account that is left inactive for an extended period of time. The equation y = 5000(0.98)^x represents the amount remaining, y, of one account that was left inactive for a period of x years. What does the number 5000 represent in this situation?

Accepted Answer

The amount of money in the account initially

Answer

A fee charged for an inactive account

Answer

The percent of money in the account after x years

Answer

The amount of money in the account after x years

Question 34

An antibiotic is introduced into a colony of 12,000 bacteria during a laboratory experiment. The colony is decreasing by 14.9% per minute. Which function can be used to model the number of bacteria in the colony after x minutes?

Accepted Answer

f(x) = 12000(1 - 0.149)^x

Answer

f(x) = 12000(1 + 14.9)^x

Answer

f(x) = 12000(1 - 14.9)^x

Answer

f(x) = 12000(1 + 0.149)^x

Question 35

There were 417 cell phones sold at an electronics store in January. Since then, cell phone sales at this store have increased at a rate of 3.75% per month. At this rate of growth, which function can be used to determine the monthly cell phone sales x months after January?

Accepted Answer

f(x) = 417(1.0375)^x

Answer

f(x) = 417(3.75)^x

Answer

f(x) = 417(0.0375)^x

Answer

f(x) = 417(1.375)^x

Question 36

A population of 1500 deer decreases by 1.5% per year. At the end of 10 years, there will be approximately 1290 deer in the population. Which function can be used to determine the number of deer, y, in this population at the end of t years?

Accepted Answer

y = 1500(1 - 0.015)^t

Answer

y = 1500(0.015)^t

Answer

y = 1500(1 + 0.015)^t

Answer

y = 1500(1.5)^t

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