Solve the problem.What is the cost of lighting a 500-watt outdoor light for 8 hours, if electricity costs 7.5¢ per kilowatt-hour?
A. 45 cents
B. 60 cents
C. 30 cents
D. 67 cents
Answer: C
Mathematics
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Find the sum of the geometric series for those x for which the series converges.
A. 
B. 
C. 
D. 
Mathematics
Provide an appropriate response.Why is this sequence geometric? ln 3, ln 9 , ln 81, ln 6561,. . .
What will be an ideal response?
Mathematics
Use the elimination method to solve the system of linear equations.6x - 7y = -6-2x - 2y = 2
A. (-1, 0) B. (-1, 1) C. No solution D. (-2, 1)
Mathematics
Decide whether the statement is true or false. If it is false, tell why.If k is a prime number, then x2 = k will have two rational solutions.
A. True B. False; the solutions will be irrational because a prime number cannot be a perfect square. C. False; the equation will have no real number solutions.
Mathematics