What is 5x-7(2-4x). i missed school today. include steps also.

Question 101 points)which equation in slope-intercept form represents the line that passes through (5, 1) and(-4,7)

What is the length of the segment joining the points at (4,5) and (6,-2) round to the nearest tenth if necessary

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?