Awire that is 66 metres long has to be cut into two pieces. the ratio of the lengths of two pieces is 7 : 5. how long is each piece?

Name the most appropriate metric unit for each measurement

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 x = -2, then x 2-7x+10 equals a. 0 b.20 c.28