Ineed guyys! did i do it wrong? @.@ i'm ded

Solve 2x+y=3 x+y=5 in substitution method

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?

Which one ? is the answer and how to find this answer