Question

find the 10th term of the sequence 1,-3,-7​

Answer 1

Formula = a + (n - 1) d

a = starting term = 1

n = finding term = 10

d = difference of two numbers = (-3) - 1 = -4

10th term = 1 + (10 - 1) -4

= 1 + (9) -4

= 1 - 36

= -35