State whether the graph is or is not that of a function.
A. Yes
B. No
Answer: B
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Use the method of undetermined coefficients to solve the differential equation.
+ y = x + sin 8x; 
= 1 and y = 0 when x = ?
A. y = - 
cos x + ? sin x + x - 
sin 8x
B. y = 
sin x + ? cos x + x - 
sin 8x
C. y = - 
sin x + ? cos x + x - 
sin 8x
D. y = - 
sin x - ? cos x + x - 
sin 8x
Determine the type of curve from the given information.A pool table is in the shape of a conic with the property that if a ball sitting at a focus is struck toward the rail, it will head toward the other focus after rebounding from the rail. What type of curve describes the shape of the pool table?
A. Hyperbola B. Ellipse C. Parabola D. None of the above
Place a less than or greater than sign in the blank to make a true statement.-5 
2
A. < B. >
Solve.The population of a suburb of Phoenix was 34.6 thousand in 2001. In addition, the population has been growing at a rate of 1.1% annually. Assuming that this growth rate continued, the model 
represents the population (in thousands of people) in the year t.(a) According to the model what will be the population of this suburb in 2010?(b) According to the model, in what year will the population of the suburb be 50 thousand?
A. (a) 37.8 thousand (b) 2002 B. (a) 38.6 thousand (b) 2034 C. (a) 38.2 thousand (b) 2251 D. (a) 38.2 thousand (b) 2035