Plug in -3 for x
the answer should be -6+-3-10
the answer is -19
It's not A or B. And between C and D, I'd choose flexible schedules. <span />
Answer:
A
Explanation:
You must know the basics of Trigonometry to solve this.
First, you must know that

lies in the second quadrant, so sin is negative.
Next, since
pi/4, is the reference angle of 3 pi/4, this means that we can set up a right triangle with pi/4 as an angle, we get


So the answer is A
I think it’s C but I could be wrong