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
.
Answer:
11%
Step-by-step explanation:
this is simple because there are 4 parts of the pie chart, and we are given 3. the one we don't know we will call x. Since its percents, we know that all of the percents will add up to 100, so we can write an equation.
45 + 23 + 21 + x = 100
to solve, you can subtract 45, 23, and 21 from both sides and you are left with x = 11 which is your solution for how many students had 3 or more absences.
hope it helps!
A. true, P does two complete rotations returning to it's original spot. 720° / 360° = 2
B. false, reflecting across a line will move P.
C. true, moving up 2 then down 2 returns P to it's original position.
D. true, if P is on the line of reflection it remains there.
E. false, P does only 4.5 rotations moving to different coordinates. 1620° / 360° = 4.5
Answer:
9/169
Step-by-step explanation:
JQK of 4 suits = 12 cards
12/52x12/52=
3/13x3/13=
9/169