Can someone answer this question,? "phillip bought apples from the grocery for $2.20 per pound. if he bought 2.5 pounds of apples on monday and 1.2 pounds on tuesday, how much did he spend on apples in total? "

The length of time for one individual to be erved at a cafeteria is a random variable having an ex- ponential distribution with a mean of 4 minutes. what is the probability that a person will be served in less than/3 minutes on at least 4 of the next 6 days?