Question

Tim open up a new saving account with a $50 deposit and plant to deposit $20 per week into the same account.write an expression to represent the total amount in his savings account.

Answer 1

50 + 20x

Explanation:

Let's call the number of weeks after he started his saving account x. Then, we starts at 50, and every week, he gains 20. Because there are x weeks, the answer is 50 + 20x.