Solve.
= -9
A. 85
B. 81
C. 77
D. empty set
Answer: D
Mathematics
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Multiply the expressions.(w - 10)2
A. w2 + 100 B. w2 - 20w + 100 C. 100w2 - 20w + 100 D. w + 100
Mathematics
Solve the problem.The following scatter diagram shows heights (in inches) of children and their ages.Height (inches)
Age (years)What is the expected height range for a 2-year old child?
A. 25-38 inches B. 35-45 inches C. 40-50 inches D. 20-30 inches
Mathematics
Express the statement as an equation involving the indicated variables.The volume V of a sphere is 
times ? times the cube of the radius r.
A. V = 
? 
B. V = 
?r
C. V = 
?r3
D. V = 
?r2
Mathematics
Factor out the greatest common factor.72x6y9 + 48x2y5 + 56x4y2
A. 8x2(9x4y9 + 6y5 + 7x2y2) B. 8x2y2(9x4y7 + 6y3 + 7x2) C. 8(9x6y9 + 6x2y5 + 7x4y2) D. x2y2(72x4y7 + 48y3 + 56x2)
Mathematics