Question

Hannah opened a bank account. She placed $120 into the bank account and added $30 per week. Now she has $450 in her account. A. Write an equation that represents her savings. B. Find the number of weeks that have passed since she opened her savings account. Explain how you arrived at your answer

Answer 1

The equation that represents her savings is $450 = $120 + $30n.

The number of weeks that have passed since she opened her savings account is 11 weeks.

What equation represents her savings?

Total amount saved = amount initially deposited + (amount added weekly x number of weeks)

$450 = $120 + $30n

Where n = number of weeks

In order to determine the value of n, take the following steps:

Combine similar terms = $450 - $120 = 30n

$330 = 30n

Divide both sides by 30

n = 11 weeks

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