In the matrix equation below, what are the values of x and y?

Colby and jaquan are growing bacteria in an experiment in a laboratory. colby starts with 50 bacteria in his culture and the number of bacteria doubles every 2 hours. jaquan starts with 80 of a different type of bacteria that doubles every 3 hours. let x equal number of days. colbys experiment follows the model: a.) y=50*2^x b.) y=50*2^8x c.) y=50*2^12x jaquans experiment follows the model: a.)80*2^x b.)80*2^8x c.)80*2^12x

If your teacher tells you to do questions 6 through 19 in your math book for homework, how many questions is that

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