What are the equivalent functions of f(x) =2(5)^2x

If the ratio of sum of the first m and n terms of an ap is m2 : n2 , show that the ratio of its mth and nth terms is (2m − 1) : (2n − 1).

The points (1, 7) and (0, 2) fall on a particular line. what is its equation in slope-intercept form?

Round each decimal to the nearest thousandth. a. 5.39562 b. 0.12345 c. 5634 d. 18.93763