Question

Write the nth term of the following sequence in terms of the first term of the sequence.

10, 20, 40,-

Answer 1

10(2)^n-1

Explanation:

Correct on Odyssey

Answer 2

10*(2)^(n-1)

Explanation:

The common ratio of the sequence is 20/10=40/20=2.

The first term is 10 so the equation is 10*(2)^(n-1)