Question: Problem 6.8. Arthur is going for a run. From his starting point, he runs due east at 10 feet per second for 250 feet. He

Problem 6.8. Arthur is going for a run. From

his starting point, he runs due east at 10 feet

per second for 250 feet. He then turns, and

runs north at 12 feet per second for 400 feet.

He then turns, and runs west at 9 feet per sec-

ond for 90 feet.

Express the (straight-line) distance from

Arthur to his starting point as a function of

t, the number of seconds since he started.

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