Given the tables for f\displaystyle {f} & g\displaystyle {g} below, find the following:

x\displaystyle {x}f(x)\displaystyle {f{{\left({x}\right)}}}g(x)\displaystyle {g{{\left({x}\right)}}}
080
156
217
371
494
503
639
765
822
948


Average rate of change of g\displaystyle {g} from 1\displaystyle {1} to 2\displaystyle {2} =