Answer:
9 hours
Step-by-step explanation:
if they came in at 7:30 a.m and leaves at 11:45 a.m they have been there for 4 hours and 15 minutes.
If they arrive at 12:30 p.m and leave at 5:15 p.m they have been there for 4 hours and 45 minutes
so in total they have been there for 9 hours
We need to know wat it looks like
You can download this app called photo math and take a pic of it and it tells you the answer
C. You'd be starting at a higher floor (positive number) and descending floors (negative number per x). If you assume x is time it's a little more logical and visual.
