Evaluate the sum. Round to the nearest hundredth, if necessary.
A. 21
B. 15
C. 20
D. 11
Answer: C
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Solve the problem.One card is selected from a deck of cards. Find the probability of selecting a red card or a card less than 4. (Note: The ace is considered a low card.)
A. 
B. 
C. 
D. 
Convert the polar equation to rectangular form. Identify the curve.r = cos ?
A. (x + y)2 = x; a circle centered at 
with radius 
B. (x + y)2 = y; a circle centered at 
with radius 
C. x2 + y2 = x; a circle centered at 
with radius 
D. x2 + y2 = y; a circle centered at 
with radius 
Factor the four-term polynomial by grouping.4x + 40 + xy + 10y
A. (x + 10y)(4 + y) B. (x + 10)(4 + y) C. (y + 10)(x + 4) D. (y + 10)(4x + y)
Solve the problem.Find the point of intersection of the three tangent planes to the paraboloid 
at the points 
and 
A. 
B. 
C. 
D. 