A) is not a function because you have two X values of -1
B) is not a function because you have two X values of -2
C) is not a function because you have two X values of 0
D) This is a function because all X values are different.
Well, you already have the decay model, so just plug that in
Answer:
.3375
Explanation:
Total people who were given drug: 800
Total people who showed improvement: 270
Probability:

<em>insert values</em>

<em>simplify</em>
<em />
<em>in decimals</em>

13 you had to round 12/5 to a whole :) :) :) :)