Choose the correct simplification of the expression (a^3/b^7)^2

Describe the domain and range of y=2(3)^x-2+5

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?

In a column proof the right column states your reasons