1. The revenue for selling x units of a product is R = 125.33x. The cost of producing x units is C = 92x + 1200. To obtain a profit, the revenue must be greater than the cost. For what values of x does this product return a profit?
2. The side length of a square is 19.3centimeters with a possible error of 0.5 centimeter. Determine the interval containing the possible areas of the square?