the function f(x)=800(1.05)^x models the weight, in grams, of a bacterial culture after xx weeks. What is the approximate average rate of change in the weight of the culture between weeks 10 and 15?

Alicia puts $400 in a bank account. each year the account earns 5% simple interest. how much money will be in her bank account in six months?

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?

Varies inversely with x. if y=8.5 when x=-1 find x when y=-1