A cell phone performs very different tasks, including streaming music, streaming video, and reading email. These tasks perform very different computing tasks. Battery life and overheating are two common problems for cell phones, so reducing power and energy consumption are critical. In this problem, we consider what to do when the user is not using the phone to its full computing capacity. For these problems, we will evaluate an unrealistic scenario in which the cell phone has no specialized processing units. Instead, it has a quad$-$core, generalpurpose processing unit. Each core uses $0\mathrm{.}5W$ at full use. For email$-$related tasks, the quad$-$core is $8$ as fast as necessary.