Quiz about Evaluating Functions

Question 1

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 2

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

Accepted Answer

21

Answer

-11

Answer

-31

Answer

25

Question 3

f(x)=2x+2

for x = 4

Accepted Answer

10

Answer

6

Answer

-8

Answer

0

Question 4

Evaluate f(x) = x² for f(-8)

Accepted Answer

64

Answer

-64

Answer

-16

Answer

16

Question 5

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 6

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 7

f(x)=x+3 f(-5) = ?

Accepted Answer

-2

Answer

-1

Answer

-8

Answer

7

Question 8

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 9

What is the value of f(0)?

Accepted Answer

4

Answer

-2

Answer

2

Answer

0

Question 10

What is f(2)?

Accepted Answer

8

Answer

-4

Answer

0

Answer

5

Evaluating Functions

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