One more after this yay

Ben bowled 124 and 188 in his first two games. what must he bowl in his third game to have an average of at least 160?

In the xy-plane, if the parabola with equation passes through the point (-1, -1), which of the following must be true?

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?