Answer the questionIf y varies directly as x, and x is doubled, how is y changed?
A. y is doubled
B. y is halved
C. y is increased by 2
D. y is unchanged
Answer: A
Mathematics
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Find the length of the curve.y = (9 - x2/3)3/2 between x = 1 to x = 27
A. 24
B. 36
C. 
D. 72
Mathematics
A company installs 5,000 light bulbs. The lifetimes of the lightbulbs are approximately normally distributed with a mean of 500 hours and a standard deviation of 100 hours. Find the approximate number of bulbs that can be expected to last the indicated amount of time.More than 400 hours
A. 4,195 B. 4,219 C. 4,205 D. 2,207
Mathematics
Find an equation for the graph.
A. y = 5 sin (2x)
B. y = 2 sin (5x)
C. y = 5 sin 
D. y = 2 sin 
Mathematics
Determine whether the improper integral is convergent or divergent, and calculate its value if it is convergent.
Mathematics