The price of CD player was reduced from 80 to 52 what was the percent decrease in the price of the CD player

What is the equation of a vertical line passing through the point (−5, −1)? y = −5 y = −1 x = −5 x = −1

If 30 lb of rice and 30 lb of potatoes cost ? $27.60? , and 20 lb of rice and 12 lb of potatoes cost ? $15.04? , how much will 10 lb of rice and 50 lb of potatoes? cost?

Find the area of the region that is inside r=3cos(theta) and outside r=2-cos(theta). sketch the curves.