Estimate the answer by rounding as indicated.Estimate the product by rounding each factor to the nearest ten.609 × 25
A. 15,225
B. 18,300
C. 630
D. 15,230
Answer: B
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Show that the function is a solution of the wave equation.w(x, t) = cos (3t - 3cx), c ? 1
A. No B. Yes
For an arc length s, area of sector A, and a central angle ? of a circle of radius r, find the indicated quantity.A = 749.4960 ft2, ? = 
, find r.
A. 28.2 ft B. 27 ft C. 9.0 ft D. 31.3 ft
Use the horizontal line test to determine whether the function is one-to-one.
A. Yes B. No
Solve the problem.The Mathematics Department is holding an election for department chair. Each member ranks the candidates from first to third. The preference table below shows the results of the ballots with candidates Clark (C), Jones (J), and Smith (S). 
If the plurality method is used to determine the winner, is the head-to-head criterion satisfied?
A. Yes B. No