Please help me guys ?

What is the missing reason in step 5? linear pair postulategivendefinition of complementary anglescongruent complements theorem

Drag each tile to the correct box. not all tiles will be used. consider the recursively defined function below. create the first five terms of the sequence defined by the given function

Aclassmate thinks that solving a system by graphing gives an exact answer when the lines appear to cross at a grid point, but only an approximate answer when they don't. explain why this isn't true.