Aroad sign is in the shape of a heptagon (7 sides). what is the measure of each angle on the sign? round to the nearest tenth. i gave y'all the exact question, i have no idea where to start.

Which shows one way to determine the factors of  x3  +  5x2  –  6x  –  30 by grouping? x(x2  –  5)  +  6(x2  –  5)x(x2  +  5)  –  6(x2  +  5)x2(x  –  5)  +  6(x  –  5)x2(x  +  5)  –  6(x  +  5)

Solve the equation w^3 = 1,000 i honestly dont know how to punch this into a calculator pls

Which of the following points is collinear with (-2,1) and (0,3)