Question

Fiona doubles the original amount in her savings account (S). Which expression represents her new balance, and what is the new balance if (S = 160)?

a) (2S + 160)
b) (S² + 160)
c) (S + 80)
d) (2S - 160)

Answer 1

The expression representing Fiona's new balance after doubling the original amount in her savings account is (2S), and if S equals 160, her new balance would be 320.

Step-by-step explanation:

If Fiona doubles the original amount in her savings account (S), the expression that represents her new balance is (2S). Given the four provided choices, the correct one is (2S) because it indicates that the original amount S is being doubled, with no additional changes like additions or subtractions. If S is 160, then the new balance would be calculated as follows:

1. Determine the original balance, which is S = 160.
2. Apply the doubling factor, so 2 times S equals 2 * 160.
3. Calculate the result, which gives us a new balance of 320.

Therefore, Fiona's new balance would be 320 if the original balance was 160.