Molly has 3 children. The first is 9 years younger that twice the age of the third. The second is 6 years older than her third child. Together the childrens ages have a sum of 89 years. Write an equation to solve for the childrens ages. How old is the second child?

The volume of a sphere is increased by 6%. calculate the corresponding percentage increased in it area.

You're locked out of your house. the only open window is on the second floor, 25 feet above the ground. there are bushes along the edge of the house, so you will need to place the ladder 10 feet from the house. what length ladder do you need to reach the window?

Marquise has 200 meters of fencing to build a rectangular garden. the garden's area (in square meters) as a function of the garden's width w w (in meters) is modeled by: a ( w ) = − w 2 + 1 0 0 w a(w)=−w 2 +100w what side width will produce the maximum garden area? meters