Question

I have no idea what my teacher means or how to do this

Answer 1

D = how much it goes up by
d = 2
14 + 2 + 2 + 2
Next three terms 16, 18, 20
Equation an = a1+ (n-1) d
A20 = 8 + (20-1) 2
A20 = 8 + 38
A20 = 46