Is needed and i kept getting the answers different every time. be my hero

I'll give brainliest if you answer right : )

Which number line represents the solution set for the inequality -1/2x> 24?

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?