Which expressions re equivalent to -6(b+2)+8

Amuffin recipe, which yields 12 muffins, calls for cup of milk for every 1 cups of flour. the same recipe calls for cup of coconut for every cup of chopped apple. to yield a batch of 30 muffins, how much flour will be needed in the mix?

Amachine part consists of a half sphere and a cylinder, as shown in the figure. the total volume of the part is π cubic inches.

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