A point on the graph of
?
?
is moving along the curve in such a way that its x-coordinate is increasing at a rate of 2 units per second. At what rate is the y-coordinate decreasing at the instant the y-coordinate is equal to 5?
?
A. 5 units per second
B. 2.5 units per second
C. 25 units per second
D. 10 units per second
E. 2 units per second
Answer: D
Mathematics
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Evaluate the integral.
A. 
B. 
C. 10
D. 
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Solve the problem.A wheel with radius 3 m rolls at 20 rad/s. How fast is a point on the rim of the wheel rising when the point is 
radians above the horizontal (and rising)? (Round your answer to one decimal place.)
A. 15.0 m/s B. 30.0 m/s C. 60.0 m/s D. 120.0 m/s
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Write the binomial expansion of the expression.(3x + 5)3
A. 27x3 + 135x2 + 135x + 125 B. 9x6 + 15x3 + 15,625 C. 27x3 + 135x2 + 225x + 125 D. 9x2 + 30x + 25
Mathematics
Solve.x2 + x + 2 = 0
A. - 
± 
B. - 
± 
i
C. 
± 
i
D. 
± 
Mathematics