Find the area enclosed by the given curves.Find the area of the region between the curve y = 4x/(1 + x2) and the interval 
of the x-axis.
A. ln 10
B. 4 e10
C. 0
D. 4 ln 10
Answer: D
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A card is drawn randomly from a standard 52-card deck. Find the probability of the specified event. The card is a heart.
A. 
B. 
C. 
D. 
Find an upper bound for the magnitude |E| of the error in the linear approximation L to f at the given point over the given region.
at 
R: |x - 1| ? 0.1, |y - 1| ? 0.1, |z - 1| ? 0.1
A. |E| ? 0.338 B. |E| ? 0.315 C. |E| ? 0.405 D. |E| ? 0.378
Find the real solutions of the equation.
= 6
A. {36}
B. {6}
C. {
}
D. {
}
Solve the problem.The relationship between 
and 
degrees of measuring temperature is linear. Find an equation relating 
and 
if 
corresponds to 
alt="" style="vertical-align: -4.0px;" /> and 
corresponds to 
Use the equation to find the Celsius measure of 
A. C = 
F - 10; - 
°C
B. C = 
F - 80; - 71 °C
C. C = 
F - 
; - 15 °C
D. C = 
F + 
; 
°C