I ANSWERED A AND B. I ONLY NEED THE ANSWER TO C. PLEASE HELP :(

On saturday morning, calls arrive at ticketmaster at a rate of 108 calls per hour. what is the probability of fewer than three calls in a randomly chosen minute?

Askate shop rents roller skates as shown on the table below. which graph and function models this situation?

When george started his current job, his employer told him that at the end of the first year, he would receive two vacation days. after each year worked, his number of vacation days will double up to five work weeks (25days) of payed vacation. how many vacation days will he have in 4 years