Question

Megan earns a rebate each month on completing surveys and books. She earns $0.75 for each survey she completes and $1 for each book. Last month Megan completed 8 surveys and earned $21.

Part A: Create an equation that will determine the number of books she purchased.
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B: Solve this equation justifying each step with an algebraic property of equality


Part C: How many books did Megan purchase last month?

Answer 1

Answer and Step-by-step explanation:

Let b = books

Part A : 8(0.75) + b = 21

Part B : 8(0.75) + b = 21

Multiply:

6 + b = 21

Take out 6 from both sides:

b = 15

Part C : Megan purchased 15 books in total