The high school stadium contains a track that surrounds a soccer field. The soccer field is 100 yards long and 40 yards wide What is the area of one of the blue half circles? ***Remember, area is pi x radius squared then you will divide by 2 since it is half of a circle.

15 points ! ~ see if you know the answer to both you!

Suppose that the price p (in dollars) and the weekly sales x (in thousands of units) of a certain commodity satisfy the demand equation 4p cubedplusx squaredequals38 comma 400. determine the rate at which sales are changing at a time when xequals80, pequals20, and the price is falling at the rate of $.20 per week.

What is the approximate value of  x  in the equation below.–3.396–0.7080.3040.955