Or The Protect-a-Phone factory makes cell phone cases, packs them into boxes, and ships them by truck. A truck that leaves the factory with b boxes carries 40b cell phone cases. This morning, a truck left the factory with 90 boxes.

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?