1. Given a₂ = 15 and a₅ = -3,240 of a geometric sequence, what is the recursive equation for the nth term?

A. a_n = 6(a_{n - 1}), a₁ = -2.5

B. a_n = 6(a_{n - 1}), a₁ = 2.5

C. a_n = -6(a_{n - 1}), a₁ = -2.5

D. a_n = -6(a_{n - 1}), a₁ = 2.5

2.What is the explicit rule for the nth term of the geometric sequence? 5, 20, 80, 320, 1,280, ...

OPTIONS

A. a_n = 5(4^{n + 1})

B. a_n = 5(4^{n - 1})

C. a_n = 4(5^{n - 1})

D. a_n = 5(4ⁿ)