The number f of miles a helicopter is from its destination x minutes after takeoff is given by f(x)=75−1.5x. The number f of miles a commercial jet is from its destination x minutes after takeoff is shown in the graph below. The graph has f(x) at 600 miles and the x is 100 minutes. Need to find: the helicopter travelled ? in ? minutes and the commercial jet travelled ? in ? minutes.

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