What is y squared times 9 to the 5th power

Which of the functions graphed below has a removable discontinuity?

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

Which equation can be used to measure the density of water in a spherical water tank? let w represent the number of water particles within the region.