Can u please help me

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?

Solve for n? [tex]z = \frac{3}{4} mn[/tex]

Can someone tell me if this is perpendicular? !