Ummm...this confusing

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?

Solutions for 2x+7 less than or equal to 3x-5

I’m still confused on how to work the percentages