Find the percent of increase from 15 lbs. to 31 lbs. Round to the nearest tenth if necessary.

Me what is the value of x? showing work would be appreciated - ! : )

Determine the volume of a cylinder bucket if the diameter is 8.5 in. and the height is 11.5 in.

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