A. -5 i think it is the right answer
angle A = 30
(2x-9) = (2x+21)
+9 +9
2x=2x+30
-2x -2x
=30
the first answer would be 5 the second is 10 and the last one is 110
The range of the function is {-7, -1, 0, 9}.
These are all of the y values in the ordered pairs, which is the definition of what range is.
The answer is 105, did the assignment got it right