Solve the following problem jana buys a dress for 25.98 and a blouse for 14.99. the total sales is 2.46. a. what is the total cost of her purchase. b. if jana pays with a $50 bill, how much change should she receive.

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