Answer:
D
Step-by-step explanation:
This is the veritcal angles theorem
Answer:

Step-by-step explanation:
Given:
Given polynomial function is.

Hours 
We need to find the concentration of the antibiotic after 3 hours.
Solution:
Rewrite the given polynomial function as.

Substitute
in given polynomial function.





Therefore, the concentration of the antibiotic after 3 hours
.
The goal is to get y by itself so that the equation can be in slope intercept (y = mx + b) form where m is the slope.
Answer:
C. c = (xv - x) / (v - 1).
Step-by-step explanation:
v = (x + c) / (x - c)
(x - c) * v = x + c
vx - vc = x + c
-vc - c = x - vx
vc + c = -x + vx
c(v + 1) = -x + vx
c = (-x + vx) / (v + 1)
c = (-x + xv) / (v + 1)
c = (xv - x) / (v + 1)
So, the answer should be C. c = (xv - x) / (v + 1).
Hope this helps!