Find the volume and surface area of the prism below

Find the x coordinate of the point.

Can someone me and do the problem plz so i can understand it more better

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?