Answer:
3
Step-by-step explanation:
I say it is 3 because 2 * 3 = 6
6/2=3
I hope this helps you:)
Let the measure of required angle be x degree
Thus, first option is the correct answer.
x= -3
21
f(x) = 2x^2 - x
f(-3) = 2*(-3)^2 - (-3)
=2*9 +3
=18 +3
=21
B