Can someone help me with 12

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?

100 points, hi, i’m not sure how to get the equation from the graph and table.

What value of x is in the solution set of 4x – 12 s 16 + 8x?