Question

A computer programmer makes $60,000 in her first year of working at a company. She gets a 10 percent pay raise every year. Create a geometric series model for how much she makes in his first 5 years of working.(1 point)

∑5n=560,000(1.1)n


∑5n=360,000(1.1)n−1


∑5n=160,000(1.1)n−1


∑5n=160,000(0.1)n−1

Answer 1

The correct model is: ∑_{n=1}^5 60000(1.1)^{\,n-1}.

Reason: first-year pay a = 60,000 and common ratio r = 1.1, so year n pay = 60000(1.1)^{n-1}.