which of the following is true about shadow

Refer to the image below. The expression "1E+30" means Bay Furniture: Excel Solver Report Adjustable Cells Constraints It is a very small number (0.0000.....(30 zeroes).....1), the smallest number in Excel and thus essentially zero. 10 raised to the power 30 (1 followed by 30 zeros), the biggest number in Excel and thus essentially infinity. Is a result of an error in the model setup An algebraic expression that we have to solve for "E