Simplify. 80-5{9-(14-12)}÷5

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 of the following are accepted without proof in a logical system? check all that apply.

Which representation has a constant of variation of -2.5