Helppp please! Dexter wrote the equation, 10x + 160 = 300, to find the number of hours he would need to work at $10 an hour to save $300. According to this equation, how much money did Dexter already have saved before he started working?

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