Interpreting Piecewise Functions

Evaluate h(3) for the piecewise function.

• -3

• 9 

• 11

• -5

Using the function provided, evaluate f(1).

• 4

• 7

• 1

• 3

• -25

• 25

• 3

• 7

• undefined

Suppose a carpet store sells carpet for $10 per square yard for the 100 sq yards purchased, and then lowers the price to $7 per square yard after the first 100 yards have been purchased.

How much does it cost for 50 square yards?

• $500

• $50

• $350

• $400

Evaluate f(-5)

• 0

• 2

• 5

• -4

What number should be in the ?

The amount Lea can earn at her job is shown:
She earns $7 per hour for the first 40 hours. 
She earns 1.5 times the hourly wage for every hour over 40 hours. 
Which piecewise-defined function best represents Lea’s weekly pay, P(h), where h represents the hours worked?

• P(h)= 7h,   0≤h≤40
  P(h)=10.5h−140,   h>40

• P(h)= 7h,   0<h<40
  P(h)= 10.5h−140,     h>40

• P(h)= 7h,     0≤h≤40
  P(h)= 10.5h+140,     h≥40

• P(h)=   7h, 0<h<40  P(h)= 10.5h+140,   h≥40

A function that is defined by different sets of input values is said to be a piece-wise function.

• TRUE

• FALSE