Function Features and Families FUN

Evaluate f(-3)

• f(-3) = -3

• f(-3) = 0

• f(-3) = 2

• not enough information to give an answer

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

• 21
• -11
• -31
• 25

• 24

• -6

• 32

• 36

What is the value of f(0)?

• -2
• 2
• 4
• 0

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.

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

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

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

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

The function c(m) = 1.45m + 3.50 represents the cost of a taxi for m miles.

What does c(7) represent?

• A cost of $7 to ride the taxi

• The cost to ride 7 miles

• The minimum distance to ride a taxi

• The minimum cost of a taxi

What is the interval of increase for this function?

• (-6, -2)

• (negative infinity, infinity)

• (-2, -6)

• (-1, 3)

What is the domain of this function in interval notation?

• (1,∞)

• [1,∞)

• (2, ∞)

• [2, ∞)

What is the y-intercept shown on the graph?

• (0, -2)

• (3, 0)

• (0, 3)

• None of these.

What is the x-intercept shown on the graph?

• (4, -2)

• (0, -2)

• (4, 0)

• (0, 4)