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A developer wants to enclose a rectangular grassy lot that borders a city street for parking. If the developer has 336 feet of fencing and does not fence the side along the street, what is the largest area that can be enclosed?

Using a phone card to make a long distance call costs a flat fee of $0.13 plus $0.30 per minute starting with the first minute. Use an equation to find the total cost of a phone call, which lasts 26 minutes.

An open box is to be made from a rectangular piece of tin by cutting two-inch squares out of the corners and folding up the sides. The volume of the box will be 100 cubic inches. Find the dimensions of the rectangular piece of tin.