Answer:

Step-by-step explanation:

Apply exponent rule: 




Answer:
6 hrs 33 minutes
Step-by-step explanation:
2hr 57min
+3hrs42min
----------------------
5 hrs 99 minutes
But 1 hr = 60 minutes so subtract 60 minutes and add 1 hour
6 hrs 33 minutes
The time(h), would be the independent variable and the temperature(C) would be the dependent variable.
The answer would be C because they say if 3 new students arrived each year.