How do the average rates of change for the pair of functions compare over the given interval?

f(x)=0.9x^2
g(x)=2.7x^2

1≤x≤5

The average rate of change of f(x) over 1 ≤x≤5 is ☐.The average rate of change of g(x) over 1≤x≤5 is ☐.The average rate of change of g(x) is ☐ times that of f(x)

-(Simplify your answers. Type integers or decimals.)