Write the polynomial in standard form (-5x^3+6x^2-3x+7)+(7x^3+8x^2-10x-10 )

Tom can paint the fence in 12 hours, but if he works together with a friend they can finish the job in 8 hours. how long would it take for his friend to paint this fence alone?

What is the solution to the division problem below x3+x2-11x+4/x+4

Asap! will mark brainliest! ( respond asap, it's urgent! : )) what is the slope for equation y =-3x + 8