Perform the indicated operation.(x + 6)(x3 + 7x - 2)
A. x4 + 6x3 + 7x2 + 44x + 12
B. x4 + 6x3 + 7x2 + 40x - 12
C. x4 + 7x2 - 2x + 6
D. x3 + 13x2 + 40x - 12
Answer: B
Mathematics
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Solve the problem.The amount of Jen's monthly phone bill is normally distributed with a mean of $69 and a standard deviation of 
. Within what range are 68% of her phone bills?
A. Between $57 and $81 B. Between $45 and $69 C. Between $69 and $81 D. Between $45 and 93
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Solve the equation for all values 0 ? x ? 2?.
cos 2x = 1
A. x = 0, 
, ?, 
B. x = 
, 
, 
, 
C. x = 
, 
, 
, 
D. No solution
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Find the second derivative of the function.
?
What will be an ideal response?
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Solve.(5x + 5)2 = 100
A. -3, 1 B. ± 21 C. 1, 3 D. 0, 1
Mathematics