I need help with my accounting class

If f(x) = 3-2x and g(x) =1/x+5 to what is the value (f/g)(8)

Write a polynomial function f of least degree that has rational coefficients, a leading coefficient of 1, and the given zeros. 3, 4+2i, 1+(sqrt)7 the answer is supposed to be: f(x)=x(^5)-13x(^4)+60x(^3)-82x(^2)-144x+360 what am i doing wrong?

Combine the information in the problem and the chart using the average balance method to solve the problem.