Decide whether the given number is a solution of the given equation.-x - 1 = -x - 8; -3
A. not a solution
B. solution
Answer: A
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Solve the problem.The slope of the tangent line to the hyperbola 5x2 - 7y2 - 217 = 0 at two points on the hyperbola is - 
. What are the coordinates of the points of tangency?
A. (7, 2) and (-7, -2) B. (5, 7) and (-5, -7) C. (7, -5) and (-7, 5) D. (7, -2) and (-7, 2)
Use the data to complete the table.The following is the number of hours students worked per week at after-school jobs. 
A. Frequency: 3, 3, 5, 5, 4 B. Frequency: 3, 4, 4, 5, 4 C. Frequency: 3, 4, 3, 6, 4 D. Frequency: 3, 4, 4, 4, 5
Solve the problem.A pulley rotates through 72° in one minute. How many rotations does the pulley make in an hour?
A. 24.0 rotations B. 432.0 rotations C. 12.0 rotations D. 216.0 rotations
Perform the indicated arithmetic.9
? 
A. -43
B. -36
C. -42
D. -38