Mathematics, 08.02.2021 23:20 damienwoodlin6

At the Dallas-Fort Worth International Airport, a DC-10, at 4500 feet, is descending towards the east runway at a rate of 150 feet per minute, and a 727, at 600 feet, is climbing at a rate of 75 feet per minute.
Which graph shows when the two planes will be at the same altitude?

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