Solve the system of equations.x -y + 5z = -75x+ z = -1x + 3y +z = 5
A. (-1, 0, 2)
B. (2, 0, -1)
C. (-1, 2, 0)
D. (0, 2, -1)
Answer: D
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Solve the problem.A surveyor measured the length of a piece of land at 100-ft intervals (x), as shown in the table. Use Simpson's Rule to estimate the area of the piece of land in square feet.
A. 27,000 ft2 B. 23,000 ft2 C. 22,500 ft2 D. 22,000 ft2
Simplify the expression. Use positive exponents. Assume variables represent nonzero real numbers.
3 ? 
4
A. 
B. 
C. 
D. 
Solve the problem.The formula 
can be used to estimate the maximum safe velocity v, in miles per hour, at which a car can travel along a curved road with a radius of curvature r, in feet. To the nearest whole number, find the radius of curvature if the maximum safe velocity is 35 miles per hour.
A. 3063 ft B. 490 ft C. 1225 ft D. 196 ft
Write the system of linear equations represented by the augmented matrix. Use x, y, and z as the variables.
A. 
B. 
C. 
D. 