Health = 6 + 30Exercise – 12Exercise2.
In case, the squared term doesn't appear correctly in some people's browsers, I have written the above formula a slightly different way below.
Health = 6 + 30Exercise – 12Exercise^2.
We have to notice here that there is a positive relationship between exercise and health. But there is a negative relationship between the squared term of exercise and health. This means that as the exercise time increases the squared term would impact health negatively.
For example:
Let us say your exercise for two hours per day.
Health = 6 + 30*2 – 12*22.
Health = 18
Let us say your friend exercise for five hours per day.
Health = 6 + 30*5 – 12*52.
Health = -144
Thus, it is clear that as the exercise time increases, health is harmed.
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