Answer:
1/10 do not exercise at all.
Step-by-step explanation:
That would be 1 - 1/2 - 2/5
= 10/10 - 5/10 - 4/10
= 1/10.
The answer is a.............................
The amount of medicine in the bloodstream decreases by 25% each hour.
<h3>Exponential equation</h3>
The standard exponential equation is expressed as:
y = ab^x
a is the initial amount
b is the rate
If b < 1, hence there is a declince
Given the expoenentia equation A(h)=600(0.75)^h,
b = 1 - r = 0.75
r = 1 - 0.75
r = 0.25
This shows that the amount of medicine in the bloodstream decreases by 25% each hour.
Learn more on exponential equation here: brainly.com/question/12940982
