Solve the problem.Assume that the elevation E, in feet, of a sag in a proposed route is given by 
where x represents the horizontal distance in feet along the proposed route and 0 ? x ? 5000. For what x-values is the elevation 1200 feet or more? Round your answer to the nearest foot.
A. x > 345 (feet)
B. x < 355 (feet)
C. x < 345 (feet)
D. x > 355 (feet)
Answer: C
Mathematics
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