Please help me. Very important please show work

On average, how many more hits will he get when he bats 100 times at home during the day as opposed to 100 times away at night?

Reflect the point (7,0) across the y-axis

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?