8.113 as a fraction PLEASE HELP ME ​

How many $20 bills do you need to have to make $280

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?

Measure of angles 31 (x+4) (3x+9) me