Which is the best estimate of the amount of juice a drinking glass holds? [can someone also help me with my test]

Which expression gives the area of the triangle shown below

Simplify the expression 10/11(22z) + (a+5) -1

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