What important step must you do before subtracting polynomials?

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?

What is the solution of log2  (3x  -  7)  =  3? 4 5

If you could answer these your a life saver