Solve the system of equations using the inverse of the coefficient matrix.
A. x = 2, y = 3, z = 5
B. x = -2, y = -3, z = 3
C. x = 2, y = -3, z = 1
D. The system is inconsistent.
Answer: C
Mathematics
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?
?
A.
B.
C.
D.
E.
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Graph the ellipse and locate the foci.
+ 
= 1
A. foci at (
, 0) and (-
, 0)
B. foci at (
, 0) and (-
, 0)
C. foci at (0, 
) and (0, -
)
D. foci at (2
, 0) and (-2
, 0)
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+ 
- 
A. 
B. 1
C. 
D. 
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Solve.The number of students in a school in year n is estimated by the model
. About how many students are in the school in each of the first three years?
A. 121, 155, 203 B. 115, 142, 190 C. 108, 142, 190 D. 108, 142, 169
Mathematics