Suppose that a phone that originally sold for $800 loses of its value each year after it is released. Write an equation for the value of the phone, , years after it is released.

Abee with velocity vector r'(t) starts out at (5, −5, −3) at t = 0 and flies around for 5 seconds. where is the bee located at time t = 5 if 5 0 r'(u)du = 0?

Aswimming pool is a rectangle with semicircles on the end. the rectangle is 12 meters wide and 30 meters long. the diameter and width of the swimming pool are equal. sketch and label an overhead diagram of the swimming pool. find the area of the swimming pool floor.

For f(x)=2x+3 and g(x)=x^2- 8 find (f+g) (x)