Dilation of ?? about the origin

In the 30-60-90 triangle below side s has a length of and side r has a length

Given f(x)= 9x+1 and g(x)=x^3, choose the expression (f*g)(x)

The holiday party will cost $160 if 8 people attend. if there are 40 people who attend the party, how much will the holiday party cost