Solve the system of equations using matrices.-3x + 4y = -512x - 7y = -25
A. (-5, -5)
B. (5, -5)
C. (-3, -7)
D. (-6, -4)
Answer: A
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Divide. Leave your answer in exponent form. Assume that all variables in any denominator are nonzero.
A. 56mn2 B. 8n2 C. 8m35n10 D. 8mn2
Solve the problem.The Little Town Arts Center charges $25 for adults, $14 for senior citizens, and $10 for children under 12 for their live performances on Sunday afternoon. This past Sunday, the paid revenue was 
for 792 tickets sold. There were 41 more children than adults. How many children attended?
A. 299 children B. 215 children C. 268 children D. 309 children
A fair apportionment of dividing a leftover piece of cake between two children is to let child #1 cut the cake into two pieces and then to let child #2 pick which piece he or she wants. Consider the following apportionment of dividing the leftover piece of cake among three children. Let the first child cut the cake into two pieces. Then the second child is permitted to cut one of those pieces into two parts. Child #3 can select any of the pieces, followed by child #1 selecting one of the remaining pieces, followed by child #2 who gets the remaining piece. Is this allocation process fair if each child's goal is to maximize the size of his or her own piece of cake? ? __________ (Yes, No)
What will be an ideal response?
Find the center, foci, and vertices of the ellipse.3x2 + 5y2 - 30x + 70y + 305 = 0
A. 
+ 
= 1
center: (5, -7); foci: (6.4, -7), (3.6, -7); vertices: (7.2, -7), (2.8, -7)
B. 
+ 
= 1
center: (-5, 7); foci: (-3.6, 7), (-6.4, 7); vertices: (-7.2, 7), (-2.8, 7)
C. 
+ 
= 1
center: (-5, 7); foci: (-3.6, 7), (-6.4, 7); vertices: (-7.2, 7), (-2.8, 7)
D. 
+ 
= 1
center: (5, -7); foci: (6.4, -7), (3.6, -7); vertices: (7.2, -7), (2.8, -7)