Writing and interpreting functions

Income tax problem

0 - $12,500, tax rate = .12

$12,500 - $35,000, tax rate = .26

greater than $35,000, tax rate = .34

What is the first line of the function?

(use $ and , for numbers

ex: $56,500)

The following table shows what a local swimming pool charges for non-members and members. Find the cost for a member who uses the swimming pool 15 times.

<Find x=0>

x²-3, -2 < x ≤ 3

f(0)

• (0,-3)

• (0,-2)

• (0,-1)

• DBL13-03S

• $12.75
• $35
• $45
• $27.75

What is the cost to ship a 12lb item?

• A

  0

• B

  15

• C

  18

• D

  25

Evaluate h(3) for the piecewise function.

• -3

• 9 

• 11

• -5

Using the function provided, evaluate f(1).

• 4

• 7

• 1

• 3

John has a summer job that pays time and a half for overtime. That is, if John works more than 40 hours per week, his hourly wage for the extra hours is 1.5 times his normal hourly wage of $7.

Evaluate choose the correct explanation for p(40)

• John was able to make $280 as a result of working 40 hours in a single week. I found this value by using the first equation in the piecewise function.

• John was able to make $280 as a result of working 40 hours in a single week.I found this value by using the second equation in the piecewise function.

• John worked 40 hours and as a result earned 0 hours of overtime. His overall income was $260.

• John was paid $40 for 280 hours of work.

A health food store sells protein powder online. A 10-lb carton of protein powder costs $27.25. It costs $4.95 to ship the powder whether you buy 1 or more cartons. How much would it cost if 2 cartons were bought?

• $25.45

• $250.20

• $66.50

• $59.45