Graph the function.y = 4 sin (2x + ?)
A. 
B. 
C. 
D. 
Answer: A
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Solve the problem.The total sales in dollars of some small businesses fluctuates according to the equation S = A + B sin ?x/6, where x is the time in months, with x = 1 corresponding to January, A = 8500, and 
Determine the month with the greatest total sales and give the sales in that month.
A. March; $12,000 B. September; $5000 C. June; $8500 D. December; $12,000
Solve the problem.Suppose that sales of a particular brand of appliance satisfy the relationship 
where y represents the number of sales in year x, with 
corresponding to 1992. Find the number of sales 
. 
A. 2600 B. 2680 C. 1260 D. 1340
Find the particular solution for the initial value problem. 
+ 2x = 3x2; y(0) = 11
A. y = 3x3 + 2x2 + 11 B. y = x3 - x2 + 11 C. y = 3x3 + x2 + 11 D. y = x3 + 2x2 + 11
A buoy oscillates in simple harmonic motion
as waves move past it. The buoy moves a total of 2.5 feet (vertically) between its low point and its high point. It returns to its high point every 8 seconds. Write an equation describing the motion of the buoy if it is at its high point at 
.
?
A. 
B. 
C. 
D. 
E. 