Is 0, 3 a solution to the equation y equals x plus 3 ,? yes or no

The surface area (sa) of a cube with a as the length of each of its sides is given by the formula . if the surface area is known, how can you rewrite the formula to find its side?

If the cost to mail a package is an initial $5 and $0.28 for every pound the total cost to mail a package was $11.27, how much did the package weigh?

15/16 as a decimal rounded to the nearest hundredth