Question

Mr. Blue's first year salary is $30,000 and it doubles each year. What is the explicit rule for the sequence in simplified form?

Question 3 options:


an = 30,000(2)n


an = 29,500(2)n−1


an = 30,000(2)n−1


an = 30,000(0. 5)n+1

Answer 1

an = 30000 * 2^(n-1)

Explanation:

The explicit rule of Mr. Blue 's salary

is an = 30000 * 2^(n-1)

How to determine the explicit

How to determine the explicitformula?

Mr. Blue's salary is a geometric sequence

with the following parameters:

First term, a1 = 30000

Rate, r = 2

The explicit rule is calculated as:

an = a1* r^(n-1)

This gives

an = 30000 * 2^(n-1)