IF STUV IS A SQUARE, please help Ill give out most and extra points !!!

Find the difference (8ab+a+2) - (3ab+6)

Can someone me and plz do the problem

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?