Which point could be used to find f(3)

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?

You have 138.72 in your saving account u take out 45.23 and 18.00 you deposit 75.85 into your account

Which expression is equivalent to -5(3x - 6/7)