Determine ? in decimal degrees. Round results to an appropriate number of significant digits.cos ? = 0.14
A. 82°
B. 80°
C. 82.0°
D. 80.0°
Answer: A
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Find the area of the surface generated when the given curve is revolved about the x-axis. y = 
on 
A. 
B. 
(19
- 7
)
C. 
(21
- 
)
D. 
Solve the problem. Round your answer, if appropriate.Electrical systems are governed by Ohm's law, which states that V = IR, where V = voltage, I = current, and R = resistance. If the current in an electrical system is decreasing at a rate of 4 A/s while the voltage remains constant at 20 V, at what rate is the resistance increasing (in ?/sec) when the current is 24 A? (Do not round your answer.)
A. 
?/sec
B. 
?/sec
C. 
?/sec
D. 
?/sec
Find the partial fraction decomposition for the rational expression.
A. 
+ 
+ 
B. 
+ 
+ 
C. 
+ 
+ 
D. 
+ 
+ 
Solve. Round your answer to the nearest tenth, if necessary.The formula 
represents the number of households in a certain city, N, in thousands, that have a computer, x years after 2005. According to the formula, in what year were there 45,000 households with computers in this city?
A. 2007 B. 2009 C. 2008 D. 2010