Question

An arithmetic sequence has a first term of 4 and a common difference of 3. What is the 20th term

of the sequence?

Answer 1

61

Explanation:

aₙ = a₁ + (n - 1)d

aₙ = 4 + (20 - 1)3

aₙ = 4 + (19)3

aₙ = 4 + 57

aₙ = 61