Add or subtract as indicated. Write the answer in simplest form.- 
+ 
A. 
B. 1
C. 0
D. undefined
Answer: C
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Find the eccentricity of the ellipse.4x2 + y2 = 36
A. 
B. 
C. 
D. 
Which is the measure of?BOC, suppose ?a=54°?
 figure 1.png)
Solve.When the temperature stays the same, the volume of a gas is inversely proportional to the pressure of the gas. If a balloon is filled with 60 cubic inches of a gas at a pressure of 14 pounds per square inch, find the new pressure of the gas if the volume is decreased to 10 cubic inches.
A. 70 pounds per square inch
B. 84 pounds per square inch
C. 78 pounds per square inch
D. 
pounds per square inch
The graph shows the monthly revenue in millions of dollars of a growing company after the company doubled its advertising. Use the graph to solve the problem. 
How many months after the company doubled its advertising did the maximum monthly revenue occur.
A. 12 months B. 6 months C. 0 months D. 9 months