Red needs an average of at least 70 on his three history tests. he has already scored 85 and 60 on two tests. what is the minimum grade red needs on his third test

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.]