Factor out the GCF.20x9y7 + 36x3y5 - 12x6y3
A. 4x3(5x6y7 + 9y5 - 3x3y3)
B. 4(5x9y7 + 9x3y5 - 3x6y3)
C. 4x3y3(5x6y4 + 9y2 - 3x3)
D. no common factor
Answer: C
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Express the set of real numbers graphed on the number line using an inequality.
A. x > -4 B. x ? -4 C. x ? -4 D. x < -4
Simplify.-28 ÷ -7 ? - 
A. - 
B. - 
C. -24
D. 
Solve and simplify.
+ y = 
A. y = 1
B. y = 
C. y = 
D. y = 
Let 
and compute the Riemann sum of f over the interval [3, 4] , using
?
Two subintervals of equal length 
. Choose the representative points to be the right end points of the subintervals.
?
__________ sq units
?
Five subintervals of equal length 
. Choose the representative points to be the right end points of the subintervals.
?
__________ sq units
?
Ten subintervals of equal length 
. Choose the representative points to be the right end points of the subintervals.
?
__________ sq units
What will be an ideal response?