The area of a triangular block is 81 square inches. If the base of the triangle is twice the height, how long are the base and the height of the triangle?

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?

What value of x is in the solution set of 4x – 12 s 16 + 8x?

What is always true about a positive integer raised to a negative odd power?