When x = 5, the value of the expression StartFraction 20 Over negative 25 plus x EndFraction–2(x – 10) is –21 –9 9 19

How can you tell when x and y are not directly proportional?

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

What adds to be the bottom number but also multiplies to be the top number with 8 on the bottom and 15 on top