untitled

Carey and Justin are raising money to purchase books for their school's library. The more money they raise, the more books they will be able to purchase for the library.

m = the amount of money Carey and Justin raise

b = the number of books Carey and Justin will be able to purchase

Which of the variables is dependent?

• m

• b

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 $1 for every she got an A on her report card.

m = money

A = A on report card

The dependent variable is:

• m = money

• A = A on report card

A movie ticket is $8.50 per person. What is the independent variable?

• Cost

• Number of people

• Tie

• Cinema