Car a gets 25 miles per gallon and costs $13,000. car b is a hybrid that gets 45 miles per gallon, but costs $25,000. assume you drive 15,000 miles per year and that gas will cost $4 per gallon for the foreseeable future. how many years will it take for car b's better fuel economy to outweigh its higher initial cost?

Aflower has 26 chromosomes. to create a new flower,how many would a sperm cell have what is called?

Luke started a weight-loss program. the first week, he lost x pounds. the second week, he lost pounds less than times the pounds he lost the first week. the third week, he lost 1 pound more than of the pounds he lost the first week. liam started a weight-loss program when luke did. the first week, he lost 1 pound less than times the pounds luke lost the first week. the second week, he lost 4 pounds less than times the pounds luke lost the first week. the third week, he lost pound more than times the pounds luke lost the first week.

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