Quan ordered a $4.50 bowl of soup. The tax rate was 72% (which equals 0.075). He paid for the soup with a $20 bill.
a. What was the tax on the bowl of soup?
b. What was the total price including tax?
c. How much money should Quan get back from his payment?

Consider a bag that contains 220 coins of which 6 are rare indian pennies. for the given pair of events a and b, complete parts (a) and (b) below. a: when one of the 220 coins is randomly selected, it is one of the 6 indian pennies. b: when another one of the 220 coins is randomly selected (with replacement), it is also one of the 6 indian pennies. a. determine whether events a and b are independent or dependent. b. find p(a and b), the probability that events a and b both occur.