Describe two methods for converting mixed numbers into decimals

If f(x) and g(x) are inverse functions of each other, which of the following shows the graph of f(g(x)

Your friend uses c=50p to find the total cost, c, for the people, p, entering a local amusement park is the cost of admission proportional to the amount of people entering the amusement park? explain.

Find the condition that the zeros of the polynomial f(x) = x^3+3px^2+3px+r may be in a.p.