Lena's fish tank has 19 liters of water in it. she plans to add 4 liters per minute until the tank has at least 43 liters. what are the possible numbers of minutes lena could add water?
We are going to define a variable to solve the problem. x: amount of time in munites The inequality in this case is given by: 4x + 19> 43 Clearing x we have: 4x> 43-19 4x> 24 x> 24/4 x> 6 Answer: the possible numbers of minutes lena could add water is: x> 6 minutes
