Find the exact value of tan A in simplest radical form

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?

Which shows the correct solution of the equation 1/2a+2/3b=50, when b=30?

Someone me! if you’re smart you can solve this!