Pls help with both parts

What is (28 + 7 + 6 + 3) x 1/2 show your work

Joseph haydn pet store offers wide variety of leashes for dogs. the store purchases one popular type of leash from its manufacturer for $4.38 each. joseph haydn pets marks up leashes at a rate of 238% of cost. what is the retail price of the popular leash?

Identify the parent function that can be used to graph the function f(x)=3(x-9)2