Mod 5 Study Guide CR

Compare the linear equations of the two scenarios.

Elaine and Jimmy listen to the same audiobook but on different devices. The audio book is 10 hours long. As each device is used to listen to the same book, the battery charge is depleted at different rates for the two devices.

The percent battery level of Elaine's device since the start is the audiobook is represented by the function f(t) = -0.75 + 50 where t is the time in minutes.

The battery level of Jimmy's device is shown in the table.

Create and use linear equations to compare the battery level on the devices. Will each device have enough battery charge to listen to the whole book?

Show your work or explain how you found your answer.