Question

NEED HELP...Find the 70th term of the arithmetic sequence -26, -19, -12, ...NEED HELP PLZ

Answer 1

a = -26

d = -19-(-26)=-19+26=7

$a70 = a + (n - 1)d \\ \\ a70 = - 26 + (70 - 1)7 \\ \\ a70 = - 26 + 7 \times 69 \\ \\ a70 = - 26 + 483 \\ \\ a70 = 457$

Therefore, the 70th term is 457.