The height of a ball is modeled by f (x) = - 16x^2 + 128x, where x is the number of seconds after the ball is hit. How long is the ball in the air?

3. A middle school yearbook committee has 35 members. There are 7 more girls than boys. Write a system of linear equations, define your variables, and solve the system to find the number of boys and number of girls.

Carissa also has a sink that is shaped like a half-sphere. The sink has a volume of (2000/3) π in³. One day, her sink clogged. She has to use one of two conical cups to scoop the water out of the sink.

Why the denator in the numerator stay the same

Gerry earns 1.5 times her normal hourly rate for each hour she works after 40 hours in a week she worked 51 hours this week and earned $734.50. What is her normal hourly rate?

12a-4 (5a-1) = 2 (3a + 6) - 4a

The owner of a video store has determined that the profits "P" of the store are approximately given by P (x) = - x^ (2) + 30x+76, where x is the number of videos rented daily.

Harold stores 10,656 pounds of grain for his 24 cattle. Each cow eats about 12 poinds of grain each day. How many days would the food supply last?

What is 91.80 divided by 4?

How do i figure out 3/4 of 640 fraction

How do you apply distributive property to a problem to make a new equation?