Writing and interpreting functions

Package B: How much will you pay for 20 people?

Bagels are $1 each if you buy 12 or fewer bagels.

If you buy more than 12 bagels, they cost $0.75 each.

The variable x represents the number of bagels.

What is the piece of the piecewise function when x > 12?

f(x) =

a function that is defined differently for different disjoint intervals

in its domain.

• Piecewise function

• open half plane

• closed half plane

• linear equations

The number of hours it takes to paint a house can be modeled by the equation  $y=\frac{12}{x}$  , where x represents the number of people painting. If there are 3 people painting, how many hours will it take them to paint the house? 

• 4 hours

• 48 hours

• 16 hours

• 3 hours

f(x)= -(x+2)²-7

Which of these is the correct table for the function above?

• 
• 
• 
• 

• 2

• -8

• 0

• -2

What is m(-3) if:    

• -3
• 0.5
• 3
• -3.5

Benjamin is tracking the temperature changes throughout the day. He uses a piecewise function to record the temperature at different times. Evaluate the piecewise function for f(-4). Type only the number in the answer.

Your let statements should be...

• Let x = $ of a rose bush

  y = $ of a daisy pot

• Let x = # of rose bushes

  y = # of daisy pots

• Let x = # of plants Clara buys

  y = # of plants Miles buys