Solve.A plane flying with a tailwind flew at a speed of 420 mph, relative to the ground. When flying against the tailwind, it flew at a speed of 310 mph. Graph the system to find the speed of the plane in calm air and the speed of the tailwind.
A. Speed of plane: 375 mph
Speed of tailwind: 45 mph
B. Speed of plane: 45 mph
Speed of tailwind: 375 mph
C. Speed of plane: 55 mph
Speed of tailwind: 365 mph
D. Speed of plane: 365 mph
Speed of tailwind: 55 mph
Answer: D
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