Solve the initial value problem.u''(x) = 12e2x - 8e-2x, u(0) = 10, u'(0) = 15
A. u = 3e2x + 2e-2x + 5x + 9
B. u = 3e2x - 2e-2x + 5x + 9
C. u = 3e2x - 2e-2x - 5x - 9
D. u = 3e2x + 2e-2x + 5x - 9
Answer: B
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Rwhere R is the parallelogram bounded by the lines 
A. 
B. 
C. 
D. 
Write the first four elements of the sequence. 
n
A. 2, 
, 
, 
B. 0, 2, 
, 
C. 0, 1, 
, 
D. 1, 
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, 
Name the place that the underlined digit occupies.5.2
17
A. Ten-thousandths B. Hundredths C. Tenths D. Hundreds
Solve the problem.Persons taking a 30-hour review course to prepare for a standardized exam average a score of 620 on that exam. Persons taking a 70-hour review course average a score of 785. Find a linear function, S(t), which fits this data, and which expresses score as a function of time. Use this function to predict an average score for persons taking a 56-hour review course. Round your answer to the tenths place.
A. 741.3 B. 720.0 C. 727.3 D. 731.5