Solution :
Let y = amount of caffeine at a given time in body.
n = number of hours
So 

ln Y = -0.01 n + C
At n = 0, Y = 130 mg
ln 130 = -0.01 x 0 + C
C = ln 130


When Y = 65



n = 69.315 hours
At n = 24 hours

Y = 102.26 mg
A- 53
B- 53
C- 127
D- 54
E- E+20
F- 59
Answer:
<em>(</em><em> </em><em>2</em><em> </em><em>,</em><em>-1</em><em> </em><em>,</em><em>3</em><em>)</em>
Step-by-step explanation:
<em>x-</em><em>2</em><em>y</em><em> </em><em>+</em><em> </em><em>z</em><em> </em><em>=</em><em> </em><em>7</em>
<em>3</em><em>x</em><em> </em><em>-</em><em> </em><em>5</em><em>y</em><em> </em><em>+</em><em> </em><em>z</em><em> </em><em>=</em><em> </em><em>1</em><em>4</em>
<em>2</em><em>x-</em><em> </em><em>2</em><em>y</em><em> </em><em>+</em><em>z</em><em> </em><em>=</em><em>3</em>
<em>WILL</em><em> </em><em>YOU MARK</em><em> </em><em>ME BRAINLIEST</em><em> </em>
QUESTION A
The probability of an event is calculated using the formula:

There are 4 nines in a standard deck of cards. Therefore, there are 48 cards that are not nines.
Since there are 52 cards, the probability is calculated to be:

The probability is 12/13.
QUESTION B
Odds in favor of a particular event are given by the number of favorable outcomes to the number of unfavorable outcomes. The formula is written out to be:

Since we have that the number of favorable outcomes is 48 and the number of unfavorable outcomes is 4, we have that the odds in favor are given to be:

The odds are 12 to 1.
Area is t<span>he square units inside a 2D figure</span>