Solve for y. Answer must be in expressed in simplest radical form

Write a corresponding real world problem to represent 2x - 125=400

When the solutions to each of the two equations below are graphed in the xy-coordinate plane, the graphs of the solutions intersect at two places. write the y-cordninates of the points of intersection in the boxes below in order from smallest to largest. y=2x y=x^2-3

Rewrite 9 log, x2 in a form that does not use exponents. 9log, x = log, x