Find g of f for f=7x+5 and g(x)=5x^2+4x-3
basically (g of f)x=(f(g(x)) so g of f=f(g(x))=7(5x^2+4x-3)+5distributef(g(x))=35x^2+28x-21+5=35x^2+28x-16g of f=35x^2+28x-16