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Sarah starts at a point 26 miles from school and runs toward school at 6 miles per hour. Ryan starts from school 1.3 hours later and runs towards Sarah at 8 miles per hour. Let x be the number of...

The fixed cost is $20 (you have to pay the RA to keep him from reporting you to the IRS), the marginal cost is $0.05 per cookie. At the beginning of your first run, you priced your cookies at $2.00...

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