An object with initial temperature 160F\displaystyle {160}^{\circ}{F} is submerged in large tank of water whose temperature is 50F\displaystyle {50}^{\circ}{F}. Find a formula for F(t)\displaystyle {F}{\left({t}\right)}, the temperature of the object after t\displaystyle {t} minutes, if the cooling constant is k=1.4\displaystyle {k}={1.4}

F(t)\displaystyle {F}{\left({t}\right)}=