Write out the first five terms of the sequence.an = 
A. - 
, - 
, 
, 
, 
B. 1, - 
, 1, 
, 1
C. - 
, 1 , 
, 1 , 
D. 1, 1, 1, 1, 1
Answer: A
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Determine whether the function is a solution of the wave equation.w(x, t) = e5ct cos 5x
A. Yes B. No
Perform the indicated operation. 
÷ 
A. 
B. 
C. 
D. 
Solve the problem.A ball is shot up in the air and its height, h, above the ground in feet is given by the function 
where x is the number of seconds the ball has been in flight. Graph this function and find the x-value for which the maximum height of the ball is attained. Round your answer to the hundredths place.
A. 1.71 B. 1.44 C. 1.56 D. 1.33
Solve the problem.The weekly sales in thousands of items of a product has a seasonal sales record approximated by 
(t is time in weeks with 
referring to the first week in the year). During which week(s) will the sales equal 75,530 items?
A. week 21 and week 30 B. week 4, week 20, and week 52 C. week 4 and week 47 D. week 30 and week 47