You put $500 in your bank account. with an interest rate of 5%, how long will it take the account to reach $600? use the formula: i = prt

Ineed no it anyone can see this

Sarah took the advertising department from her company on a round trip to meet with a potential client. including sarah a total of 11 people took the trip. she was able to purchase coach tickets for $280 and first class tickets for $1280. she used her total budget for airfare for the trip, which was $6080. how many first class tickets did she buy? how many coach tickets did she buy?

Im so bad at fractions they are not my best math thing to work on