Jerermy jogged 75 yards from his house to school. How many feet did Jeremy jog? What do you notice about the relationship between the number of yards and the number of feet Jeremy jogged?

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?