Solve the Problem $E$ (Expressed as a Percent) Changes with Respect to Time

Multiple Choice

Solve the problem.
-The rate at which an assembly line worker's efficiency $E$ (expressed as a percent) changes with respect to time $t$ is given by $E^{\prime}(t) =70-6 t$ , where $t$ is the number of hours since the worker's shift began. Assuming that $\mathrm{E}(1) =92$ , find $\mathrm{E}(\mathrm{t})$ .

A) $E(t) =70 t-3 t^{2}+92$
B) $E(t) =70 t-6 t^{2}+25$
C) $E(t) =70 t-3 t^{2}+25$
D) $E(t) =70 t-3 t^{2}+159$