When you cube something you times that number by itself 3 times.
(This is what I think) First, we minus 720 from her 1000. Now she has $280 left. 280 divided by 28 (the trainer cost) is 10. So, she can spend 10 hours with the personal trainer.
area of rectangle= length × width
here I think I have to draw a rectangle (using insert you can easily get a rectangle)
Answer:

Step-by-step explanation: