Erica was playing on the elevators. She went up 6 floors, then down 2 floors. Next she went up 3 floors, then down 5 floors. If Erica started on the first floor, what floor was she on after she was finished playing?

One of the complementary angles is 4 degrees mor than the other. find the angles (recall that complementary angles are angles whose sum is 90 degrees.) which of the following can not be used to solve the problem if x represents one of the angles? a. 2x-4=90 b. 2x+4=90 c. x+4=90