Multiply (3x^2-2x)(2x^2+3x-1) A.5x^4+2x^3-8x^2+2x

Which addition property is being illustrated below? (type commutative or associative) (6 + 7) + 1 = 6 + (7 + 1)

Which steps could be part of the process in algebraically solving the system of equations, y+5x=x^2+10 and y=4x-10

I’m on question 7 it says a covered water tank is in the shape of a cylinder the tank has a 28 inch diameter and a height of 66 inches to the nearest square inch what is the surface area of the water tank