Pls zoom in I need help asap

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?

10% of 1,900,000. show me how you got the answer

The number of fish in a lake can be modeled by the exponential regression equation y=14.08 x 2.08^x where x represents the year