Just got back from break and the first thing we do is a comp check. no idea how to do this.

Acertain population of bacteria demonstrates exponential growth doubles in size every 4 days. how long will it take the population to triple in size?

Solve: 25 points find the fifth term of an increasing geometric progression if the first term is equal to 7−3 √5 and each term (starting with the second) is equal to the difference of the term following it and the term preceding it.

An elevator travels 310 feet in 10 seconds. at that speed, how far can't his elevator travel in 12 seconds?