Answer the question please and no links. Please explain too. ​

Ineed to know the answer to this algebra question.

The functions f(x) and g(x) are shown in the graph f(x)=x^2 what is g(x) ?

Alexandra drove from michigan to colorado to visit her friend. the speed limit on the highway is 70 miles per hour. if alexandra's combined driving time for the trip was 14 hours how many miles did alejandra drive?