Question

What is the 7th term of the geometric sequence where a1 = –3 and a5 = –768?

Answer 1

i know how to do the equation i just need someone to ell me what step im doing wrong

Answer 2

first

if first term = a then 5th term = ar^4

so ar^4 / a = r^4 = -768 / -3 = 256
so r = 4

seventh term = ar^6 = -3 * 4^6 = -3* 4096 = - 12288