Javier is cooling a liquid in a science lab. the liquid starts at 85 degrees, and he cools it 3.5 degrees every minute for 12 minutes. create a number sentence to model this scenario

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

An architect is designing a water fountain for a park she uses the given function to model the water jet flowing from the fountain nozzles where h(x) gives the height of the water jugs in feet x feet from the starting point h(x)=-1/20x+x+15

What values of x satisfy the inequality x^2-9x< 0? how is your answer shown on the graph?