Complete this statement:
15a2x2 + 12a2x + 9a2 = 3a?(

In the equations, a and b represent the price per night for a room in hotel a and hotel b, respectively, w weeks after september 1 last autumn. what was the price per night in hotel a when it was equal to the price per night in hotel b? a = 240 − 20w b = 320 − 30w

Write 17/20 as a decimal and as a percent.

Is the square root of 4 plus the square root of 16 rational?