Given that MNPQ is a rectangle with vertices M(3,4), N(1,-6), and P(6.-7), find the coordinates Q that makes this a rectangle.

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?