9 is subtracted from the sum of 5 and a number
B. Females typically spend less time than males on the sites

This is because the interest is annually, this means that every year the interest is given over wat you already had + what you earned in interest.
The growth factor is 1.03 (or 3%) and X is after how many years.
You started with 500 and this grows with factor:
Answer:
Step-by-step explanation: Cost-Benefit Analysis
The answer is about 1.09....
900x=980
980/900
1.088
so about 9%