Question

Find the 64th term of the arithmetic sequence -4, -21, -38, ...−4,−21,−38,...

Answer 1

Answer:

a= -4

d = - 21- (-4)= -17

a64= a+(n-1)d

a64= -4+(64-1) ×-17

= -4+63 × -17

= -4 -1071

= -1075