Kristy earns $18 for 2 hours of babysitting. she charges a constant hourly rate. which table correctly shows the amount kristy earns baby-sitting for different number of hours?

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?