Answer:
The mean is 4.88 hours / day
Step-by-step explanation:
To calculate the mean we just add the values and divide by the number of items (in this case we add the hours and divide by the number of days)
so the equation would be

Answer:
This would be a decay function.
Step-by-step explanation:
When a function is a growth function that means that it is growing but a decay function means that it is getting smaller.
Percent of decrease :
Original - New / Original
so...
80 - 52 / 80 ---->
28/80
.35 multiply by 100 to get percent
35% increase Hope I helped if you have any questions let me know! :)
Answer:
9x9x9x9x9x9x9, theres your answer