This is hard for me I've been sitting here for a couple of hours

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?

What values of x satisfy the inequality x^2-9x< 0? how is your answer shown on the graph?

1: 4 if the wew 35 surfboards at the beach how many were short boards?