An artist is using three different colors in a mosaic. the ratio of green to blue to yellow color tiles in the mosaic is 4: 6: 9. she has 42 blue tiles to use. how many green and yellow tiles does she need?

What is the product of the radical expression. (7-2square root) (8+2 square root)

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?

The square pyramid has a volume of 441 cubic inches. what is the value of x? 1/7x is the height x is the base