Draw a model for th subtraction problem using interger chips

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

Which equation represents the partial sum of the geometric series?

15 and 14.7 are 1 apart, so 15 – 14.7 must be 1.