Quiz about ALG Unit 5 MID: Lessons 7-9

Question 1

Which equation has the largest growth factor?

Accepted Answer

Option C is correct

Answer

A.

Answer

B.

Answer

D.

Question 2

Match the graph with the given situation: An Amazon stock doubles its value each fiscal quarter.

Accepted Answer

Option D is correct

Answer

A.

Answer

B.

Answer

C.

Question 3

Match the graph with the given situation: A Facebook stock decreases its value by $20 each fiscal quarter

Accepted Answer

Option C is correct

Answer

A.

Answer

B.

Answer

D.

Question 4

Match the graph with the given situation: A Starbucks stock increases in value by $50 each fiscal quarter

Accepted Answer

Option B is correct

Answer

A.

Answer

C.

Answer

D.

Question 5

Match the graph with the given situation: A Blockbuster stocks value decreases by half each fiscal quarter.

Accepted Answer

Option A is correct

Answer

B.

Answer

C.

Answer

D.

Question 6

New York City traditionally has an issue with rats. Starting in the year 2000 the City of New York began to take data on the rat population of a particular subway stop in Brooklyn.

Write an equation using the variable r to represent the rat population and x to represent the number of years.

Accepted Answer

32

Answer

64

Answer

128

Answer

256

Question 7

New York City traditionally has an issue with rats. Starting in the year 2000 the City of New York began to take data on the rat population of a particular subway stop in Brooklyn.

Write an equation using the variable r to represent the rat population and x to represent the number of years.

Accepted Answer

2

Answer

1/2

Answer

1

Answer

3

Question 8

New York City traditionally has an issue with rats. Starting in the year 2000 the City of New York began to take data on the rat population of a particular subway stop in Brooklyn.

Write an equation using the variable r to represent the rat population and x to represent the number of years.

Accepted Answer

r(x) = 32(2)^x

Answer

r(x) = 32(1/2)^x

Answer

r(x) = 256(2)^x

Answer

r(x) = 256(1/2)^x

Question 9

A colony of bacteria is currently at 35,000 bacteria b, its population decreases by 1/3 after every dose of antibiotics given, d. Write an equation that represents the amount of bacterial still alive after ever dose of antibiotics.

Accepted Answer

b = 35,000 (2/3)^d

Answer

d = 35,000 (2/3)^b

Answer

b = 35,000 (1/3)^d

Answer

d = 35,000 (1/3)^b

Question 10

A group of biologists is surveying the mice population in a forest. The equation n=20,000(0.5)^t gives the total number of mice, n, t years since the survey began.

What does the 20,000 means in this situation?

Accepted Answer

The initial amount of mice when the survey began

Answer

The number of years surveyed

Answer

The decay factor of mice per year

Question 11

A group of biologists is surveying the mice population in a forest. The equation n=20,000(0.5)^t gives the total number of mice, n, t years since the survey began.

What does the (0.5) means in this situation?

Accepted Answer

The decay factor of mice per year

Answer

The number of years surveyed

Answer

The initial amount of mice when the survey began

Question 12

A group of biologists is surveying the mice population in a forest. The equation n=20,000(0.5)^t gives the total number of mice, n, t years since the survey began.

What is the population of mice 2 years after the survey began?

Accepted Answer

5,000

Answer

80,000

Answer

40,000

Answer

20,000

Answer

10,000

Question 13

A group of biologists is surveying the mice population in a forest. The equation n=20,000(0.5)^t gives the total number of mice, n, t years since the survey began.

What is the population of mice 1 year BEFORE the survey began?

Accepted Answer

40,000

Answer

80,000

Answer

20,000

Answer

10,000

Answer

5,000

Question 14

A biologist is studying the population of ants in one colony. By his estimate the equation p(t)=2000(1.5)^t represents the population of the colony, where p is the population and t is the number of years since the original survey.

What is the value of p(0) ?

Accepted Answer

2,000

Answer

889

Answer

1,333

Answer

3,000

Answer

4,500

Question 15

A biologist is studying the population of ants in one colony. By his estimate the equation p(t)=2000(1.5)^t represents the population of the colony, where p is the population and t is the number of years since the original survey.

What is the value of p(2) ?

Accepted Answer

4,500

Answer

889

Answer

1,333

Answer

2,000

Answer

3,000

Question 16

A biologist is studying the population of ants in one colony. By his estimate the equation p(t)=2000(1.5)^t represents the population of the colony, where p is the population and t is the number of years since the original survey.

What is the value of p(-1) ?

Accepted Answer

1,333

Answer

889

Answer

2,000

Answer

3,000

Answer

4,500

Question 17

A biologist is studying the population of ants in one colony. By his estimate the equation p(t)=2000(1.5)^t represents the population of the colony, where p is the population and t is the number of years since the original survey.

What is the MEANING of p(-2)=889 ?

Accepted Answer

Two years before the survey started there were 889 mice.

Answer

Two years after the survey started there were 889 mice.

Question 18

A water treatment plant is using new technology to make salt water into clean drinking water. According to their calculations, they can use the equation g=200(3)^t where g is the number of drinkable gallons in a saltwater basin and t is the number of months that pass by.

What does the value 200 represent in this equation?

Accepted Answer

The starting value of the amount of gallons of water

Answer

The exponential growth rate of the gallons of water

Answer

The number of years for the gallons of water

Question 19

A water treatment plant is using new technology to make salt water into clean drinking water. According to their calculations, they can use the equation g=200(3)^t where g is the number of drinkable gallons in a saltwater basin and t is the number of months that pass by.

What does the value 3 represent in this equation?

Accepted Answer

The exponential growth rate of the gallons of water per month

Answer

The number of years for the gallons of water

Answer

The starting value of the amount of gallons of water

Question 20

A water treatment plant is using new technology to make salt water into clean drinking water. According to their calculations, they can use the equation g=200(3)^t where g is the number of drinkable gallons in a saltwater basin and t is the number of months that pass by.

How much drinkable water will there be in one month?

Accepted Answer

600

Answer

200

Answer

300

Answer

500

ALG Unit 5 MID: Lessons 7-9

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