Can someone please help me with this

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?

Complete the equation of the line through (−10,3) and (−8,−8). use exact numbers.

Mackenzie needs to determine whether the rectangles are proportional. which process could she use? check all that apply.