How many solutions does the following equation have? -3x + 9 - 2x = -12 - 5x

Evaluate the expression for the given value of the variable. 5×(h+3) for h=7

Need on this geometry question. explain how you did it.

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?