Question

Kala is putting money into a savings account. She starts with $750 in the savings account, and each week she adds $70. Let S represent the total amount of money in the savings account (in dollars), and let W represent the number of weeks Kala has been adding money. Write an equation relating S to W. Then use this equation to find the total amount of money in the savings account after 11 weeks.

Answer 1

$1520

Explanation:

S = $750 + $70W

S = $750 + $70(11) = $1520

Answer 2

$1520

Explanation:

The total amount of money in the savings account after W weeks is equal to the initial amount of money, $750, plus the amount of money added each week for W weeks. We can represent this relationship with the following equation:

S = 750 + 70W

To find the total amount of money in the savings account after 11 weeks, we can substitute 11 for W in the equation above:

S = 750 + 70(11)

= 750 + 770

= 1520

Therefore, the total amount of money in the savings account after 11 weeks is $1520.