Question 3:
Since it does not start proportional, I would assume there was 1.6 meters already in the pond.
I would say the rate of change is 0.4 Meters per hour.
I believe this because in the last 2 hours it went from 2 meters to 2.8 meters. This makes me believe there was 1.6 meters already because if you count the first hour you can do 2-0.4=1.6
In conclusion the rate of change is 0.4 Meters per hour.
For question 4:
The rate of change is $7.75 per hour or $7.75/hour
Step-by-step explanation:
I got this answer by finding how much Sarah makes per hour.
15.50=2 therefore if you divide both sides by 2 you get 7.75=1
7.75=1 means Sarah makes 7.75 per hour.
Then, to check my answer I multiplied the unit rate of 7.75=1 by 4
This gave me 31.00=4 or Sarah makes 31.00 for every 4 hours.
In conclusion, the rate of change is $7.75 per hour
