Which is the measure of x?
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A) 72
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Solve the problem.The delivery of a drug (such as an antibiotic) through an intravenous line may be modeled by the differential equation src="https://sciemce.com/media/4/ppg__tttt0613190828__f1q11g5.jpg" alt="" style="vertical-align: -4.0px;" /> are solutions increasing? decreasing? What is the equilibrium solution?
A. increasing for A < 40 and decreasing for A > 40; m(t) = 40
B. increasing for A > 40 and decreasing for A < 40; m(t) = 40
C. increasing for A < 40 and decreasing for A > 40; m(t) = 0
D. increasing for A > 40 and decreasing for A < 40; m(t) = 0
where m(t) is the mass of the drug in the blood at time 
k is a constant that describes the rate at which the drug is absorbed, and I is the infusion rate. Let 
and 
For what initial values
Use polar coordinates to find the limit of the function as (x, y) approaches (0, 0).f(x, y) = 
A. 1 B. 0 C. 2 D. No limit
Find the exact value of the expression.cos 40° cos 20° - sin 40° sin 20°
A. 
B. 
C. 
D. 
Use the multiplication property of equality to solve the equation. -k = -12
A. -13 B. 12 C. 13 D. -12