Question

Calcule o 34° termo de PA (5,7,9...)

Answer 1

$a_n = a_1+(n-1)*r\\\\ r = a_2-a_1 = 7-5 = 2\\\\ a_3_4 = 5+(34-1)*2\\\\ a_3_4 = 5+66\\\\ \boxed{a_3_4 = 71}$

Answer 2

A35=A1+(N-1).R
A35 = 5+(35-1).2
A35=5+34.2
A35=5+68
A35=73 TA AI