the shoe store clerks are paid on commission. if the clerk receives a 12% commission on total purchase amounts before tax is applied, how much would the commission be for Isaac's purchase with and without a coupon?

Nine more than four times a number is the same as one less than twice the number. find the number?

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?

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%