Question

Please help!!! Urgent

Which equation can be used to find the nth term of the sequence, an?

3, 15, 75, 375, 1875, ...


an=5⋅0.6n−1

an=5⋅3n−1

an=0.6⋅5n−1

an=3⋅5n−1

Answer 1

• D. aₙ = 3*5ⁿ⁻¹

Explanation:

Given sequence:

• 3, 15, 75, 375, 1875, ...

We observe this is a GP with the first term of 3 and common ratio of 5.

Equation for the nth term is:

• aₙ = a₁rⁿ⁻¹
• aₙ = 3*5ⁿ⁻¹

Correct choice is D