Find the standard-form equation of the ellipse centered at the origin and satisfying the given conditions.An ellipse with vertices (±6, 0) and foci at (±3, 0)
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1
Answer: B
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Solve the initial value problem.
= (4t + 3) sin (2t2 + 3t), s(0) = -6
A. s = cos (2t2 + 3t) - 7
B. s = sin (2t2 + 3t) - 6
C. s = -cos (2t2 + 3t) - 5
D. s = -cos
- 
Solve the problem.The Internal Revenue Service randomly tags 5% of all tax returns for a possible audit. If 200 Middletown residents have had their tax returns tagged, approximately how many residents live in Middletown?
A. 10 B. 40,000 C. 4000 D. 1000 E. none of these
Answer the question.Which of the following is NOT listed as a suggestion to follow when preparing for an exam?
A. Relax, and work on the exam thoughtfully. B. Test yourself. C. Revisit your homework and the chapter review problems. D. Reread the sections in the textbook that will be covered on the exam.
Match the function f with its graph.f(x) = log x
A. 
B. 
C. 
D. 