Question

Maggie bought c CDs for $12 each, b books for $7 each, and a purse costing $24.

a. Write an expression to show the total amount of money Maggie spent.

b. If Maggie bought 4 CDs and 3 books, how much money did she spend?

Answer 1

A. 12c + 7b + 27

B. $96

Explanation:

We know each CD costs $12 but we don't know the amount. This term can be written as 12c with c standing for the number of CDs.

We also know each book costs $7 but we don't know the amount either. This term can be written as 7b with b standing for the number of books.

We know Maggie only buys 1 purse for $24 so we can leave this term as $24.

Adding all these terms gives us our expression:

12c + 7b + 27

We plug in 4 for c and 3 for b to into the expression and solve for the total money spent.

12(4) + 7(3) + 27

48 + 21 + 27= 96

Maggie spent $96.