Mark worked on math homework less than 1/3 the amount of time that his brother did. if mark spent 25 minutes on his math homework, how much time did his brother spend on his math homework?

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

Is a positive integer raised to a negative power always positive

Me asap! what is the slope of this line? enter your answer in the box.