Find the volume of the solid generated by revolving the region bounded by the given lines and curves about the 
. y = 2cos (?x), y = 2, x = -0.5, x = 0.5
A. 8?
B. 4?
C. 
?
D. 2?
Answer: D
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Find the volume of the solid generated by revolving the region about the given axis. Use the shell or washer method.The triangle with vertices (0, 0), (0, 2), and (2, 2) about the line x = 2
A. 
?
B. 
?
C. 
?
D. 
?
Decide whether or not the given equation is an identity.(cos ? - sin ?)2 + (cos ? + sin ?)2 = 2
A. Yes B. No
Solve the problem. Write all linear equations in slope-intercept form.Suppose that a sales person observes that if an item is priced at $10 per item then 4 items are sold. If 2 items are sold for $12 per item then find a linear equation to model the number y of items sold for x dollars per item. Find the slope-intercept form of the equation of the line.
A. y = -x + 14 B. y = -x - 6 C. y = x - 6 D. y = x + 14
Simplify the expression.
A. -3 B. 4 C. -4 D. -5