ANSWER
The correct answer is C

EXPLANATION
The ordered pair of the relation are:

The domain is the set of all the x-values for which the function is defined.
These are:

Therefore the correct option is C.
The Answer is A: 255.4 I took the test
12 × 12 =144+ 6 = 150 I'm pretty sure
Cos to 2 decimal places is -0.90
:)
Have you tried doing 6 in x 4 in, if not try that