Average drug dose. The concentration, C ( t ) , of phenylbutazone, in micrograms per milliliter (μg/mL), in the plasma of a calf injected with this anti-inflammatory agent is approximately C ( t ) = 42.03 e − 0.01050 t , where t is the number of hours after the injection and 0 ≤ t ≤ 120 . (Source: A. K. Arifah and P. Lees, “Pharmacodynamics and Pharmacokinetics of Phenylbutazone in Calves,” Journal of Veterinary Pharmacology and Therapeutics , Vol. 25, 299–309 (2002).) a. Given that this model is accurate for 0 ≤ t ≤ 120 , what is the initial dosage? b. What is the average amount of phenylbutazone in the calf’s body for the time between 10 and 120 hours?
Average drug dose. The concentration, C ( t ) , of phenylbutazone, in micrograms per milliliter (μg/mL), in the plasma of a calf injected with this anti-inflammatory agent is approximately C ( t ) = 42.03 e − 0.01050 t , where t is the number of hours after the injection and 0 ≤ t ≤ 120 . (Source: A. K. Arifah and P. Lees, “Pharmacodynamics and Pharmacokinetics of Phenylbutazone in Calves,” Journal of Veterinary Pharmacology and Therapeutics , Vol. 25, 299–309 (2002).) a. Given that this model is accurate for 0 ≤ t ≤ 120 , what is the initial dosage? b. What is the average amount of phenylbutazone in the calf’s body for the time between 10 and 120 hours?
Average drug dose. The concentration,
C
(
t
)
, of phenylbutazone, in micrograms per milliliter (μg/mL), in the plasma of a calf injected with this anti-inflammatory agent is approximately
C
(
t
)
=
42.03
e
−
0.01050
t
,
where t is the number of hours after the injection and
0
≤
t
≤
120
. (Source: A. K. Arifah and P. Lees, “Pharmacodynamics and Pharmacokinetics of Phenylbutazone in Calves,” Journal of Veterinary Pharmacology and Therapeutics, Vol. 25, 299–309 (2002).)
a. Given that this model is accurate for
0
≤
t
≤
120
, what is the initial dosage?
b. What is the average amount of phenylbutazone in the calf’s body for the time between 10 and 120 hours?
2. Suppose the population of Wakanda t years after 2000 is given by the equation
f(t) = 45000(1.006). If this trend continues, in what year will the population reach 50,000
people? Show all your work, round your answer to two decimal places, and include units. (4
points)
3. Solve the equation, give the answer exactly (no calculator approximations), and show all your
work. (4 points)
log5 2x = 3
Let I =
f(x) dx, where f is the function whose graph is shown.
4
2
y
f
X
1
2
3
4
(a) Use the graph to find L2, R2 and M2.
R₂
M2
=
=
=
(b) Are these underestimates or overestimates of I?
O 42 is an underestimate.
O 42 is an overestimate.
◇ R2 is an underestimate.
OR2 is an overestimate.
OM2 is an underestimate.
○ M2 is an overestimate.
(c) Use the graph to find T2.
T₂ =
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