Solve the problem.A forest ranger at Lookout A sights a fire directly north of her position. Another ranger at Lookout B, exactly 2 kilometers directly west of A, sights the same fire at a bearing of N41.2°E. How far is the fire from Lookout A? Round your answer to the nearest 0.01 km.
A. 2.18 km
B. 2.28 km
C. 2.32 km
D. 2.25 km
Answer: B
Mathematics
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Use a graphing calculator or computer to determine which of the given viewing windows displays the most appropriate graph of the specified function.f(x) = 2 cos 60x
A. [-1, 1] by [-4, 4] B. [-10, 10] by [-10, 10] C. [-0.2, 0.2] by [-1, 1] D. [-0.2, 0.2] by [-4, 4]
Mathematics
Solve the problem.The price p (in dollars) and the quantity x sold of a certain product obey the demand equation p = -20x + 560, 0 ? x ? 28.What price should the company charge to maximize revenue?
A. $21 B. $14 C. $7 D. $16.8
Mathematics
Evaluate the expression.(-a - b)2
for a = -1, b = 4
A. 25 B. -25 C. -15 D. 9
Mathematics
Simplify.
A. 
B. 5x - 3
C. 
D. 5x2 - 26
Mathematics