Which statement is most accurate?

Is δ pmr similar to δ smn ? if so, which postulate or theorem proves these two triangles are similar?

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

An 18% discount on a watch saved a shopper $72. find the price of the watch before the discount