Use l'Hopital's Rule to evaluate the limit.
A. 
B. 
C. 0
D. 1
Answer: C
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Use the method of undetermined coefficients to solve the differential equation.
+ y = 9x + cos 2x; 
= 0 and y = 9? when x = ?
A. y = -9 sin x - 
cos x + 9x - 
cos 2x
B. y = 9 sin x + 
cos x + 9x - 
cos 2x
C. y = 9 sin x - 
cos x + 9x - 
sin 2x
D. y = 9 sin x - 
cos x + 9x - 
cos 2x
Solve.A rock falls from a tower that is 73.5 m high. As it is falling, its height is given by the formula 
How many seconds will it take for the rock to hit the ground (h=0)?
A. 8.6 s B. 1100 s C. 8.3 s D. 3.9 s
Solve.For the following whole number, list all its factors. 16 =
A. 24 B. 1, 2, 4, 8 C. 1, 2, 4, 8, 16 D. 2, 4, 16
Solve the problem.Find the value of a retirement savings account paying an APR of 6.6% (compounded monthly) after 40 years of monthly contributions (contributions made at the end of each month, including the last month) when the monthly contribution is $170. Round your answer to the nearest cent.
A. $428,359.87 B. $367,541.45 C. $371,712.72 D. $410,337.81 E. $399,104.52