Prove that there does not exist integers m and n such that 2m+4n=7

The graph shown is the graph of which function?

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?

Put the following steps for calculating net worth in the correct order