Mary is 3 years older than twice her brother's age, a. Which expression represents Mary's age?
A. 2a + 3

B. 2a - 3
C. 3a + 2

D. 3a - 2

Can some one me, i’ve been asking for so long

Set up and solve a proportion for the following application problem. if 55 pounds of grass seed cover 404 square feet, how many pounds are needed for 7272 square feet?

John has 1/2 pound of oranges to share with julie. if they share the oranges equally, how much will each of them have?