Quiz about Function Notation

Question 1

f(x)=4x+5
f(4)=

Accepted Answer

21

Answer

-11

Answer

-31

Answer

25

Question 2

f(x)=x²-5x
f(4)=

Accepted Answer

-4

Answer

126

Answer

24

Answer

84

Question 3

Evaluate f(x) = x² for f(-8)

Accepted Answer

64

Answer

-64

Answer

-16

Answer

16

Question 4

Evaluate f(t)=-2t²+ 1 for f(-3)

Accepted Answer

-17

Answer

19

Answer

37

Answer

-11

Question 5

g(x) = 5 - 6x
Find g(-5)

Accepted Answer

g(-5) = 35

Answer

g(-5) = -25

Answer

g(-5) = 6

Answer

g(-5) = 4

Question 6

f(x) = 3x² - 11
Find f(-5)

Accepted Answer

f(-5) = 64

Answer

f(-5) = -86

Answer

f(-5) = 214

Answer

f(-5) = -7

Question 7

Evaluate f(-5) if f(x) = -2x - 12

Accepted Answer

-2

Answer

-22

Answer

-19

Answer

-5

Question 8

The function h(t) represents the height in inches of a plant after t weeks. What does the notation h(4) = 5 mean?

Accepted Answer

After 4 weeks the plant is 5 inches tall

Answer

After 5 week the plant is 4 inches tall

Answer

The plant grows at a rate of 5/4 inch per week

Answer

The plant grows at a rate of 1 inch per week

Question 9

The function c(m) = 1.45m + 3.50 represents the cost of a taxi for m miles.
What does c(7) represent?

Accepted Answer

The cost to ride 7 miles

Answer

A cost of $7 to ride the taxi

Answer

The minimum distance to ride a taxi

Answer

The minimum cost of a taxi

Question 10

Ms. Brackemyer is collecting pencils.  The function p(x)=5x+12 tells us the total amount of pencils Ms. Brackemyer has after collecting for x number of days.  What is the meaning of p(8)=52?

Accepted Answer

After 8 days, Ms. Brackemyer has 52 pencils.

Answer

Ms. Brackemyer starts with 8 pencils and ends with 52.

Answer

Ms. Brackemyer starts with 52 pencils and gets 4 more every day.

Answer

Every day, Ms. Brackemyer gets 4 new pencils until she has 52.

Question 11

A company is selling bubble gum.  The function g(x)=3x+4 tells the company how much to charge if someone buys x packages of bubble gum.  Find g(8) and tell what it means within the context of the problem.

Accepted Answer

g(8)=28.  This means that 8 packages of gum costs $28.

Answer

g(8)=8.  This means that after 8 packages of gum, the company makes $8.

Answer

g(8)=42.  This means that 8 packages of gum costs $42.

Answer

g(8)=24.  This means that 8 packages of gum costs $24.

Question 12

Which of the following represents the function f(x) = 3x - 2?

Accepted Answer

b.

Answer

a.

Answer

c.

Answer

d.

Question 13

A plumber charges $25 for a service call plus $50 per hour of service. Write an equation in slope-intercept form for the cost, C, after h hours of service. What will be the total cost for 8 hours of work?

Accepted Answer

C = 50h + 25

Accepted Answer

425

Answer

25 = 5h + 50

Answer

90

Question 14

Rufus collected 100 pounds of aluminum cans to recycle. He plans to collect an additional 25 pounds each week. Write the equation for the total pounds, P, of aluminum cans after w weeks. How long will it take Rufus to collect 400 pounds of cans?

Accepted Answer

P = 25w + 100

Accepted Answer

12

Answer

P = 100w + 25

Answer

20

Question 15

For babysitting, Nicole charges a flat fee of $3, plus $5 per hour. Write an equation for the cost, C, after h hours of babysitting. How much money will she make if she baby-sits 5 hours?

Accepted Answer

C = 5h + 3

Accepted Answer

28

Answer

H = 3c + 5

Answer

20

Question 16

A water tank already contains 55 gallons of water when Baxter begins to fill it. Water flows into the tank at a rate of 8 gallons per minute. Write a linear equation to model this situation. Find the volume of water in the tank 25 minutes after Baxter begins filling the tank.

Accepted Answer

y = 55x + 8

Accepted Answer

255

Answer

y = 8x + 55

Answer

1383

Question 17

Suppose that the water level of a river is 34 feet and that it is receding at a rate of 0.5 foot per day. Write an equation for the water level, L, after d days. In how many days will the water level be 26 feet?

Accepted Answer

-16

Accepted Answer

L = -1/2d + 34

Answer

L = 500d - 34

Answer

12

Question 18

WRITE AN EQUATION
For a field trip 4 students rode in cars and the rest filled nine buses. How many students were in each bus if 472 students were on the trip?

Accepted Answer

4+9x=472

Answer

4x=472

Answer

9x=472

Answer

4+x=472

Question 19

WRITE AN EQUATION
You bought a magazine for $5 and four
erasers. You spent a total of $29. How
much did each eraser cost?

Accepted Answer

-5 - 4x = -29

Answer

5 + x = 29

Answer

5x = 29

Answer

29 - 5 = -4x

Question 20

Identify the domain of the following relation:
Remember domain is the "x" values

Accepted Answer

-6, 0, 2, 4

Answer

-6, 14, 2, 28

Answer

(-6,14), (0,32), (2,38), (4,44)

Answer

14, 32, 38, 44

Question 21

A shoe company used packing boxes to ship four orders to retail stores. The number of packing boxes needed to transport the pairs of shoes is a function of the number of pairs ordered for each delivery. This function only consists of the ordered pairs (44, 3), (60, 4), (72, 5), and (88, 6). What is the domain for this situation?

Accepted Answer

{44, 60, 72, 88}

Answer

{44, 88}

Answer

{3, 4, 5, 6, 44, 60, 72, 88}

Answer

{3, 4, 5, 6}

Question 22

What is the domain of the function?

Accepted Answer

D:{all real numbers}

Answer

D:{ x is greater than or equal to 3}

Answer

D:{x is less than or equal to 3}

Answer

D:{ x is all real numbers between and including -1 and 5}

Question 23

How would you say h(n)

Accepted Answer

n of h

Answer

h of n

Question 24

What is the range of the following graph?

Accepted Answer

all real numbers

Answer

all integers

Answer

any real number greater than zero

Answer

it can not be determined

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