Question

Find the 20th term: -30, -22, -14, -6, ....

(Hint: Finding the nth term if an Arithmetic Sequence formula: a, = a; +(n-1)d. ) show work please

Answer 1

122

Explanation:

a(n) = a +(n-1)d

a=-30

d=-22+30=-14+22=-6+14=8

a(n) = -30+(n-1)8

a(20) = -30+(20-1)8

=122

hope this helps