-7α + 28 = 7

please help

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?

When the ball has traveled a distance of

Solve this equation using substitution. {4x + y = −2} {4x + 6y = 44}