Explain how to solve an equation when the variable in the equation is being multiplied by a fraction

Fanny mendelssohn manages all the magazines and paperback books at a local grocery store. she prices many paperbacks to sell at $7.99. the cost to the store is $5.29. what is the markup rate on a paperback book, based on its cost?

Jeremy wants to determine the number of solutions for the equation below without actually solving the equation.

Asap! i need this done today and i really don’t understand it. some one ! will mark