B
Hope this helped I only did like 1 lesson on functions
Answer: x-value
Step-by-step explanation:
the x-value is the input, domain and 1st element.
<em>The answer is -2/5.</em>
(3/5+1/5)+(4/5-2/5)-(9/5-1/5)=
(4/5+2/5)-8/5=
6/5-8/5=
-2/5.
So, to find the answer you'd first add up how many patients you have:
20+50+100 = 170.
In a fraction your total would go on the bottom. Then you'd take how many patients are taking a real drug, which is represented by 20+50 = 70. This number would go on top.
So, the probability of a patient NOT getting a placebo is 70/170. Simplified would be 7/17.
The answer is D. 7/17.
