Find the area of the surface generated when the given curve is revolved about the x-axis. y = 
on 
A. 
?
B. 
?
C. 98?
D. 
?
Answer: D
Mathematics
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Graph the function.y = 
A. 
B. 
C. 
D. 
Mathematics
Find a rectangular equation for the plane curve defined by the parametric equations.x = 5 cos t, y = -2 sin t; 0 ? t ? 2?
A. 4x2 - 25y2 = 100; x ? 5
B. 4x2 + 25y2 = 1; - 
? x ? 
C. 4x2 - 25y2 = 1; x ? 
D. 4x2 + 25y2 = 100; -5 ? x ? 5
Mathematics
Find the missing angle in the triangle.Two angles are 45° and 108°.
A. 27° B. 153° C. 63° D. 207°
Mathematics
Factor out the largest common factor.a(7 - b) + c(7 - b)
A. a(7 - b) + c B. (7 - b)(a - c) C. (7 - b)(a + c) D. a(7 - b) - c
Mathematics