Johnny is designing a rectangular poster to contain 30 in2 of printing with a 5-in margin at the top and bottom and a 6-in margin at each side. What

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Johnny is designing a rectangular poster to contain 30 in2 of printing with a 5-in margin at the top and bottom and a 6-in margin at each side. What overall dimensions will minimize the amount of paper used? The dimensions of the poster that minimize the amount of paper used are E] in.