A person buys a cup of tea. The tea'stemperature in °F is given by

$\displaystyle {149}{e}^{{-{0.06}{t}}}+{65}$

where $\displaystyle {t}$ is in minutes. If the person waqits until the tea is 162 °F before they begin to drink it, how long will they have to wait? Round your answer to the nearest tenth of a minute.

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