Change g(x) to y and switch x and y. from here you need to solve for y. first you get rid of the fraction by multiplying both sides by 5. you now have 5x=9y+25. to isolate y, subtract 25 from both sides 5x-25=9y. last divide both sides by 9: 5/9x -25/9 = y
. To get 25% of 300, we multiply 300 by either 0.25 or 
