Question

If f(2)= 10, f(3) = 20, f(4) = 30, f(5) = 40, then f(7) =

Answer 1

60

Explanation:

f(2)=10, f(3)=20, f(4)=30

so the pattern is that f(x)=10x-10

therefore, f(7)= 10*7-10 = 70-10 =60

Answer 2

The pattern is that you add 10 every time.