Respuesta :

Answer:

0.91 Hours left

Step-by-step explanation:

She has .91 left.

4.21 minus 3.30 equals .91.

Check work:

4.21

3.30

-------

0.91

(1 minus 0 is 1, 2 gets turned into 12-3 and the 4 got turned to a 3. 12-3 is 9, and 3-3 is zero. Then you just carry down the decimal)

Hope this helps! :)