Find the real solutions of the equation by factoring.x3 - 81x = 0
A. {0, 81}
B. {0, 9}
C. {0, 9, -9}
D. {0, -9}
Answer: C
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Solve the problem.Rule: The sum of any two horizontally adjacent numbers is the number immediately below them. Use this rule to complete circle pattern.
A. 
B. 
Use the properties of logarithms to find the exact value of the expression. Do not use a calculator.ln e
A. e
B. 36
C. 
D. 6
Solve the problem.The cost, in dollars, of retaining the services of a computer repairman in Anchorville is given by 
where x is the number of hours worked. Find the slope and y-intercept of the equation and explain what each signifies.
A. 18 signifies the hourly rate, and 66 signifies the overhead charge. B. 66 signifies the hourly rate, and 18 signifies the overhead charge. C. -66 signifies the hourly rate, and 18 signifies the travel cost. D. 84 signifies the cost for an on-site inspection.
Give all solutions of the nonlinear system of equations, including those with nonreal complex components.x2 + 3xy + y2 = 4 x2 - 3xy - y2 = 4
A. {(2, 0), (-2, 0)} B. {(0, 2), (0, -2), (2, -6), (-2, 6)} C. {(2, -6), (-2, 6)} D. {(2, 0), (-2, 0), (2, -6), (-2, 6)}