Answer:
D, you simply just add 1.3 each time.
Answer: -11 + (-13)
Step-by-step explanation: This shows that the stock has decreased by 24.
Since the measure of angle
is 
The measure of its reference angle = 
=
Now we have to compute the value of 


The value of (
) lies in the fourth quadrant. In fourth quadrant, the value of tan is always negative.
So, 

= -1.