When Edna's phone is fully charged, it can operate for up to 18 hours before running out of battery. It has been 6 hours since Edna's phone was fully charged.
Let x represent how many more hours Edna's phone can operate without running out of battery. Which inequality describes the problem?
Solve the inequality. Then, complete the sentence to describe the solution.
Edna's phone can operate for up to
more hours without running out of battery.
