What is the mean of 15, 16, 16, 18, 17

Consider the proof. given: segment ab is parallel to line de. prove: what is the missing statement in step 5?

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 you have 12 feet of string and you cut it into equal length of 5 inches each how much string will be left