Aquart of milk cost 73 cents. a case of 12 quarts costs $7.68 . how much is saved per quart by buying the milk by the case

If you flip a coin 3 times, what is the probability of flipping heads 3 times? a. p(3 heads) = 3/8 b. p(3 heads) = 1/6 c. p(3 heads) = 1/8 d. p(3 heads) = 1/2