Solve.An investment is worth $2381 in 1994. By 1999 it has grown to $4746. Let y be the value of the investment in the year x, where x = 0 represents 1994. Write a linear equation that models the value of the investment in the year x.
A. y = -473x + 7111
B. y = 473x + 2381
C. y = -473x + 2381
D. y = 
x + 2381
Answer: B
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Solve the system of equations using matrices. Use Gauss-Jordan elimination. x = 6 - y - z x - y + 3z=-62x + y = 8 - z
A. {(-1, 2, 5)} B. {(-1, 5, 2)} C. {(2, 5, -1)} D. {(5, -1, 2)}
The graph of two equations along with the points of intersection are given. Substitute the points of intersection into the systems of equations. Are the points of intersection solutions to the system of equations (Y/N)?
2x2 = y + 5y = -14x + 19
A. No B. Yes
Suppose the National League team has a probability of 
of winning a World Series game and the American League team has a probability of 
. The series is over as soon as one team wins four games.
Find the probability that the series is over in seven games. Please round your answer to four decimal places. ? P = __________ Fill in the blank(s) with the appropriate word(s).
Simplify.(3!)2
A. 4 B. 12 C. 36 D. 9