Question

Find the first, fourth, and eighth terms of the sequence.

A(n) =-5 * 3^n -1
–5; –135; –10,935
–45; –1,215; –98,415
1; –3,375; –170,859,375
–15; –405; –32,805

Answer 1

its just a case of replacing n with 1 and then calculating a value

then repeating the process with n = 4 and lastly n = 8