Rob and alan went to taco express. rob bought seven tacos and to fajitas and paid $12.65. adam bought 4 tacos and one fajita and paid $6.95. find the cost of one taco.

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?