7. "Happy" brand peanut butter is sold in cylindrical jars of varying sizes. As is usually the case, buying the larger jar has a reduced unit price. The larger jar has a unit price of 5.5 cents per cubic inch of peanut butter. The smaller jar has a unit price of 6.3 cents per cubic inch of peanut butter. Find the cost of each jar of peanut butter, to the nearest penny.