In 2003, 57 deer were introduced into a wildlife refuge area from which the population had previously been hunted to elimination. By 2006, the population had grown to 76 deer. If this population grows exponentially, find the values of $\displaystyle {a}$ and $\displaystyle {b}$  in the formula for the function $\displaystyle {f{{\left({x}\right)}}}={a}\cdot{b}^{{x}}$

$\displaystyle {a}$ = and $\displaystyle {b}$ =

Round $\displaystyle {a}$ to the nearest deer, and round $\displaystyle {b}$ to one decimal.