HELP ASAP! im really stuck because im dumb and if anyone can help that would be appreciated!

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

Can someone check if i did this right since i really want to make sure it’s correct. if you do you so much

Over the course of a month, a person's weight decreases. what type of relationship is this? a. positive relationship