If x+2=5 then x= What

Trigonometry hellllllpppppppp asap

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?

I'm confused on this could anyone me and show me what i need to do to solve it.