Question

Find the 15th term of the arithmetic sequence if the first term is -3 and the common difference is 2. Write the equation first, then substitute to find the answer

Answer 1

25.

Explanation:

f(x)=-3+2(x-1)

f(15)=-3+2(15-1)

f(15)=-3+2(14)

f(15)=-3+28

f(15)=25