A system of nonlinear equations is given. Sketch the graph of the equation of the system and then determine the number of real solutions to the system. Do not solve the system.x2 + y2 = 522y + 3x = 0
A. Two
B. Two
C. Two
D. Four
Answer: C
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Solve the problem.A 100 gal tank is half full of distilled water. At time = 0, a solution containing 2 lb/gal of concentrate enters the tank at the rate of 4 gal/min, and the well-stirred mixture is withdrawn at the rate of 
When the tank is full, how many pounds of concentrate will it contain?
A. 175 pounds B. 200 pounds C. 150 pounds D. 187.5 pounds
Evaluate the spherical coordinate integral.
A. 
?2
B. 
?
C. 
?2
D. 
?
Provide an appropriate response.For the following line, name a ray with endpoint D and interior point E. 
Fill in the blank(s) with the appropriate word(s).
Solve the problem.One Sunday in February, the high temperature in Buffalo was 46° F. For the next 5 days, the high dropped 3°F each day. What was the temperature the following Friday, and was it above, at, or below freezing (32°F)?
A. 32°F, at freezing B. 61°F, above freezing C. 31°F, below freezing D. 38°F, above freezing