A2 1.1 Functions & Continuity

Sarah is bringing treats to her elementary school class on her birthday. The number of treats she brings in is based on the number of students in her class.

t = the number of treats

s = the number of students

Which of the variables is INDEPENDENT?

• s

• t

Sophie earned $5 for every A she got on her report card.

m = money

A = A on report card

The dependent variable is:

• m = money

• A = A on report card

Carrie gets one sticker for every paper she completes.

s = stickers
p = paper

The independent variable is:

• s = stickers
• p = paper

f(x) is the same thing as ______.

• y
• x
• input
• an equation

Given h(x) = 5 - 9x, find h(8). 

• h(8) = -360
• h(8) = -67

Evaluate f(-2) if f(x) = x²+ 3

• -1
• 1
• 7
• -7

The price p of an ice cream is $3.95 plus $0.85 for each topping t on the ice cream.

• p = 0.85t - 3.95

• p = 0.85t + 3.95

• p = 3.95t + 0.85

What is the range of the graph?

• [-7, 5)

• (-3, 1]

• [-3, 1)

• (-7, 5]

What is the domain?

• [-2, 3]

• [-2, 3)

• (-2, 3]

• [-3, 4]

• (-3, 4]

What is the domain?

• None of the answer choices