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#39735

algebra

rate

functions

slopes

word problem

linear

graphs

modeling

medium

45 sec

A water tank is being filled at a constant rate. The graph above shows the volume of water, in liters, in the tank after $x$ minutes. At 2 minutes, the tank contains 15 liters of water. At 5 minutes, the tank contains 45 liters of water. What is the rate, in liters per minute, at which the tank is being filled?

• Up to 5 characters (6 if negative). Only numbers, decimal (.), fraction (/), negative (-).
• Fractions must be in lowest terms.
• Mixed numbers must be converted to improper fractions.