Nara can do 70 push-ups im 2 minutes. luke can do 105 push-ups in 3 minutes. do these rates from a proportion? explain

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?