Craigs annual take home pay is 75000. what is maximum amount that he can spend per month paying off credit cards and loans and not be in danger of credit overload?

To find the inverse of a number a, one can use the equation f(c) = a-1/c=0 where c is the inverse of a use the secant method of finding roots of equations to find the inverse of a = 2.5 ,er = 0.001%