Can someone please help and if you’re correct i’ll give brainliest

Simplify 15(x - 4)(x -1)-3(x + 4)(x - 1) with steps

How do i put 3(x+7) in distributive property

Marquise has 200 meters of fencing to build a rectangular garden. the garden's area (in square meters) as a function of the garden's width w w (in meters) is modeled by: a ( w ) = − w 2 + 1 0 0 w a(w)=−w 2 +100w what side width will produce the maximum garden area? meters