Question

Find the 15th term of the sequence 5n + 3

Answer 1

first term = 5(1) + 3 = 8

n = 15

d = 5(2) + 3 - 8 = 13-8 = 5

15th term = a + (n-1)d

= 8 + (15-1)(5)

= 8 + (14)(5)

= 8+ 70

= 78