Perform the indicated operations.(5x2 + 2x - 2) - (3x2 - 9)
A. 8x2 + 11x - 2
B. 8x2 + 2x - 11
C. 2x2 + 11x - 2
D. 2x2 + 2x + 7
Answer: D
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Solve the problem.A construction crane lifts a bucket of sand originally weighing 
at a constant rate. Sand is lost from the bucket at a constant rate of
. How much work is done in lifting the sand 
? (Neglect the weight of the bucket.)
A. 9600 ft ? lb B. 8700 ft ? lb C. 7800 ft ? lb D. 6900 ft ? lb
Translate to a proportion and solve. When necessary, round to the nearest hundredth.86% of what is 77.4 ?
A. 111 B. 43 C. 90 D. 86
Differentiate the following function implicitly to find dy / dx
The diagonals of quadrilateral MNPQ are perpendicular-bisectors of each other. Being as specific as possible, what type of quadrilateral is MNPQ?
A. parallelogram B. rectangle C. square D. rhombus