If hector is 8 years old and Mary is 3 years old how old will Mary be when hector is 16?

2. Solve 3^4x-5 = (1/27) ^2x+10 for x. Show your work.

Which algebraic expression is equivalent to the expression below 6 (2x+5) + 4x

What is the minimum number of 7 passenger vans needed to transport 19 people? 12 6 4 3

Simplify like terms: 2 (x+y) - 5x+9y

This is ur problem sis u got this Which of the following is equivalent to 16a2 - 49 A. (4a - 7) (4a - 7) B. (4a + 7) (4a - 7) C. (7 - 4a) (7 - 4a) D. (7 + 4a) (7 - 4a)

At a camp, kids can choose swimming, art, or music. 40 kids choose swimming, 16 choose art, and 24 choose music. What is the ratio of kids who choose art to kids who choose swimming?

3. Nine times ten to the negative third power

Josie read 100 pages of her book last week and 146 pages this week her older brother says he read about 3 to 4 times as many total pages as Josie explain why 2,500 is not a reasonable estimate for the number of pages that Josie's brother read

Sam has three identical tennis balls with a diameter of 2.7 inches. Determine the volume of all three tennis balls?

The base of a Mary-go-round spans an area of about 153.86 square meters. How long is the diameter