A company's stock was selling at $28 a share. A month later, it was
selling at $21 a share. What is the
percent decrease?

You paint a 1/2 of a wall in 1/4 hour. how long will it take you to paint one wall

Jackie purchased 3 bottles of water and 2 cups of coffee for the family for $7.35. ryan bought 4 bottles of water and 1 cup of coffee for his family for 7.15. how much does each bottle of water cost? how much does each cup of coffee cost?

If x = -2, then x 2-7x+10 equals a. 0 b.20 c.28