Lillian's bedroom door is 9 feet tall and 3 feet wide. A new door would cost $3.00 per square foot. How much would a new bedroom door cost in total?

An ulcer medication has 300 milligrams in 2 tablets. how many milligrams are in 3 tablets?

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

The party planning committee has to determine the number of tables needed for an upcoming event. if a square table can fit 8 people and a round table can fit 6 people, the equation 150 = 8x + 6y represents the number of each type of table needed for 150 people.