Coach Carter needs to order equipment for the school teams. • He orders footballs and basketballs, a total of 30 items are purchased.
• Basketballs cost $12 and footballs cost $18 and a total of $480 is spent.
Write and solve a system of equations to represent this problem.

What is the area of a pizza with a radius of 40 cm leave the answer in terms of π to find your exact answer 40π cm² 1600π cm² 800π cm² 80π cm² π=pi

The position of a moving particle is given by the position function: f(t)=-9t-t^2-0.2t^3+0.1t^4 a. at what time does the particle reverse direction? b. when is the displacement positive? (round one decimal place and answer in interval notation) c. when is the displacement negative? (round one decimal place and answer in interval notation) d. when is the particle’s acceleration positive? (round one decimal place and answer in interval notation) e. when is the particle’s acceleration negative? (round one decimal place and answer in interval notation)

Percent increase and decrease. original number: 45 new number: 18