Review Piecewise

What is the interval for the green part of this piecewise function?

• -2 < x ≤ 1

• -1 < x ≤ 0.5

• x > -2

• x ≤ 1

Which piecewise function matches the graph?

• 
• 
• 
• 

What are the domain restrictions for the middle piece of this function?

• x ≥ 1

• x ≥ 2

• 2 ≤ x < 6

• 1 ≤ x < 3

What is the Domain and Range?

• D: (-inf, -2)U(-2, inf)

  R: [1, inf)

• D: (-inf, inf)

  R: [-1, inf)

• D: (-inf, inf)

  R: [1, 2)U(2, inf)

• D: (-inf, 1)U(2, inf)

  R: [-1, inf)

A phone plan charges $30 for the first 500 minutes of talk time and $0.10 per minute for each additional minute. Write a piecewise function to represent the cost of x minutes of talk time.

• 
• 
• 
• 

What is f(-1)?

• 6

• -2

• sqrt(2)

• DNE

What is f(-2)?

• 4

• 1

• 1

• DNE

What is f(4)?

• -5

• 0

• 3

• 6

What is the equation of the RED piece (one on the RIGHT)?

• x - 1  if x > 3

• 3  if  x ≥ 3

• -1  if  x ≥ 3

• -1  if  x > 3