Answer:
The answer is D 5 hours a day
Step-by-step explanation:
All you need to do to find the rate of change is you divide the hours of sleep by the number of days or divide the right number by the left like this 15/3 = 5
-25-6=-31
Change the subtraction sign into positive and add 25 and 6, then put the negative sign after.
To find the mean is to find the average, which means add all the data values together and divide by the number of data values. In this case, we add those values together and divide by 6, which equals 82.5/6= 13.75
31 divided by 2 = 15.5/8 = 0.51612903235. Estimate and get your answer.
