Solve the problem.A plane flies 420 miles with the wind and 340 miles against the wind in the same length of time. If the speed of the wind is 30 mph, what is the speed of the plane in still air?
A. 275 mph
B. 285 mph
C. 290 mph
D. 310 mph
Answer: B
Mathematics
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Find the area of the region specified in polar coordinates.one petal of the rose curve r = 9 cos 3?
A. 
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B. 
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C. 
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D. 
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Mathematics
Find the measure of the indicated angle. Figure is not drawn to scale.
A. 143° B. 42° C. 97° D. 37°
Mathematics
Solve the problem.The 10th hole at the Riverwoods Golf Course is 150 yards long. How long would it be on a model with a scale of 1.5 inches to 50 yards? Round to nearest tenth.
A. 22.5 inches B. 2.3 inches C. 4.5 inches D. 75.0 inches
Mathematics
Solve the equation.-9b + 6 + 7b = -3b + 11
A. {-6} B. {6} C. {-5} D. {5}
Mathematics