Solve the problem by integration.Find the volume generated by revolving the first-quadrant area bounded by 
and 
about the 
A. 
?
B. 
?
C. 
?
D. 
?
Answer: A
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Solve the double inequality.-13 < -3a + 5 and -3a + 5 ? -1
A. 2 < a ? 6 B. -6 < a ? -2 C. 2 ? a < 6 D. -6 ? a < -2
Solve.A common equation used in business is a demand equation. It expresses the relationship between the unit price of some commodity and the quantity demanded. In the demand equation 
for a certain style of calculator, p is the price per calculator in dollars and x is the quantity demanded in thousands. Find the demand for the calculator if the price is $6 per calculator.
A. 10 thousand units
B. 40
thousand units
C. 9 thousand units
D. 51 thousand units
Solve the quadratic equation by completing the square.x2 - 2x - 35 = 0
A. {7, -5}
B. {
, 
}
C. {-30, -5}
D. {-7, 5}
Graph the system of inequalities.x2 + y2 ? 100-9x + 5y ? -45
A. 
B. 
C. 
D. 