Connor has 3/8 of a gallon of cherry soda, 3/8 of a gallon of grape soda, 3/8 of a gallon of lemon soda. how much soda, in gallons does connor have?

Can someone me with #s 8, 9, and 11. with just one of the three also works. prove using only trig identities.

Amira is painting a rectangular banner 2 1/4 yards wide. the banner will have a blue background. amira has enough paint to cover 1 1/2 square yards of the wall. the school colors are blue and yellow, so amira wants to add yellow rectangles on the left and right sides of the blue rectangle. the yellow rectangles will each be 3/4 yards wide and the same height as the blue rectangle. what will be the total area of the two yellow rectangles?

Due to a packaging error, 4 cans labeled diet soda were accidentally filled with regular soda and placed in a 12 pack carton of diet soda. two cans were randomly selected from this 12 pack. what is the probability that both cans were regular soda?