Steel alloys are formed by mixing certain ratios of iron, carbon, and possible other elements. The table shows the amount of carbon required to make certain amounts of a particular alloy. Find the missing value for the table.

Select the correct answer from each drop-down menu. a system of equations and its solution are given below. system a complete the sentences to explain what steps were followed to obtain the system of equations below. system b to get system b, the equation in system a was replaced by the sum of that equation and times the equation. the solution to system b the same as the solution to system a.]