The temperature of pot of water fell from 72 degrees to 36 degrees in 4 minutes. find the average change in temperature per minute.

The variable z is directly proportional to x, and inversely proportional to y. when x is 4 and y is 13, z has the value 1.2307692307692. what is the value of z when x= 9, and y= 20

Divide. write in simplest form 41/6 divided by 10

Which function has the domain x> -11