Use the formula C = 2nr and = 3.14 to find the circumference of a circle with a radius of 5 meters

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?

Write the standard form of an equation with (see picture below)

What is the period of the sinusoidal function ?