Question

determine o 15 termo da pa ( 32, 64, 96, 128, 160)

Answer 1

An=a1+(n-1).r
a15=32+(15-1).32
a15=32+14.32
a15=480

Answer 2

an= a1+(n-1)*r
a15= 32+(15-1)*32
a15= 32+448
a15= 480

Forte abraço!