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On the way to the airport a few years ago, my wife’s car hit a huge hole in a construction area, damaging the front right wheel. Huge. I think there may have been alligators living in it. The temporary tire forced us to decrease our average speed by 15 miles per hour. If the 39-mile drive usually takes us 45 minutes, how much time should we have budgeted for the drive home from the airport?
A landscape architect is planning a new nature area in the middle of an urban campus. She wants the length to be twice the width, and wants to put a 3-foot-high retaining wall around the perimeter. There will be 309 total feet of wall installed. How wide will this area be?

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