What is a right angle

When using the linear combination metho e linear combination method to solve a system of linear equations, the four options are:

Someone this asap for a group of students attends a basketball game. * the group buys x hot dogs at the concession stand for $2 each. * the group buys y drinks at the concession stand for $3 each. the group buys 29 items at the concession stand for a total of $70. how many hot dogs did the group buy?

∆red ≅ ∆ by rule will give brainiest if possible