Please answer this correctly

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)

What is the solution to the system of equations? (–2, –8) (–1, –5) (0, –2) (2, 4)

Julia is going for a walk through the neighborhood. what unit of measure is most appropriate to describe the distance she walks?