If an arithmetic sequence is defined by a(n)=7x-3. Write the first three terms (a1,a2,a3)

Answer 1

If a(n)=7x-3

The first term is a₁ = 7(1)-3 = 4

The second term a₂ = 7(2)-3 = 11

The third term a₃ = 7(3)-3 = 18