Find the slope. PLZZZ HELP

Isee the amount was $90.00 then reduced to $75.00 , what is the percent ?

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?

The table shows the balance of a money market account over time. write a function that represents the balance y (in dollars) after t years.