1.

Find nth term of -15,-18,-21

Answer»

ANSWER:

-3n-12

Step-by-step explanation:

a= -15

d= -3

NTH term = a + (n-1)d

nth term= -15+(n-1)-3

nth term= -15-3n+3

nth term= -12-3n

nth term= -3n-12

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