Evaluating Functions

Evaluate for f(1)

• 0

• -3

• 3

• 2

Evaluate for f(-5)

• 1

• 0

• 2

• -2

What is the range?

• {-3, -1, 2, 4}

• {0, 4, 7} 

• {0, 4, 4, 7}

• {7, 4, 0}

A holiday church's meal costs $12.50 a person plus a delivery fee of $30. The equation is: f(x)=30+12.5x, where x is the number of hungry people. If there are 15 people in the church, what is the domain?

• 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15

• 0, 42.50, 55, 67.50, 80, 92.50, 105, 117.50, ....

• None of the above.

Is this table a function or not a function? 

• Function

• Not a Function

Find f(2)

• 10

• 8

• 6

• 4

Find f(0)

• - 3

• - 2

• - 1

• 0

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

• After 5 week the plant is 4 inches tall

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

• After 4 weeks the plant is 5 inches tall

• The plant grows at a rate of 1 inch per week

• -9

• -4

• 1

• 7

• 12

Given the graph of the function

Find f(0)

• -2

• 2

• 4

• 0