Subtract and reduce to lowest terms of 4 5/7- 2 4/7

Alonso walked with his friend andy one day, and wanted to compare their speeds. alonso walked 3 miles in one hour, and andy walked 2 miles in 2 hours. complete the table to graph the relationship for each person.

The function f(x) = 14,600(1.1)* represents the population of a town x years after it was established. what was the original population of the town?

Can someone factor this fully? my friend and i have two different answers and i would like to know if either of them is right. you in advance. a^2 - b^2 + 25 + 10a