Factor by grouping.x3 - 2x2 + 9x - 18
A. (x2 + 9)(x - 2)
B. (x + 9)(x2 - 2x)(x - 2)
C. (x2 - 2x) + 9(x - 2)
D. x(x2 - 2x + 9) - 18
Answer: A
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Evaluate the cylindrical coordinate integral.
A. 16? + ln 2 B. 8? + ln 2 C. 16 - ln 2 D. 8 - ln 2
Find the indicated series by the given operation.Show that by differentiating term by term the expansion of 
the result is the expansion for 
A. 
(1 + 2x - 3x2 + 4x3 - . . .) = -2(1 + 3x - 6x2 + . . . )
B. 
(2x + 3x2 - 4x3 + . . .) = -2(1 - 3x + 6x2 - . . .)
C. 
(1 - 4x + 6x2 - 8x3 + . . .) = -2( 2 - 6x + 12x2 - . . .)
D. 
(1 - 2x + 3x2 - 4x3 + . . .) = -2(1 - 3x + 6x2 - . . .)
Provide the proper response.A homework problem was "Find 
% of $2300." Student answers were $5.75, $57.5, $575, and $5750. Which is correct? What mistakes were made in getting the answers that are wrong?
What will be an ideal response?
Solve the problem.Midtown Delivery Service delivers packages which cost $1.90 per package to deliver. The fixed cost to run the delivery truck is $70 per day. If the company charges $6.90 per package, how many packages must be delivered daily to break even?
A. 14 packages B. 36 packages C. 9 packages D. 7 packages