Question

You made two deposits to your bank account this month. One deposit was $10.18, and the second deposit was $16.99. Your balance at the end of the month is $72.31, and you made no withdrawals. Write and evaluate an expression for your balance at the beginning of the month.

Answer 1

The expression for the balance at the beginning of the month is $45.14.

Explanation:

Let's call the balance at the beginning of the month "B". We know that the balance at the end of the month is $72.31, and we made two deposits of $10.18 and $16.99. Therefore, we can write the following equation:

B + 10.18 + 16.99 = 72.31

To solve for B, we need to isolate it on one side of the equation. We can start by combining the two deposit amounts:

B + 27.17 = 72.31

Next, we can subtract 27.17 from both sides of the equation:

B = 45.14

Therefore, the expression for the balance at the beginning of the month is B = $45.14.