Answer:
A
Step-by-step explanation:
I used a calculator:
(-4a^2)(2a^-3)^-4 = -a^14/4
If

(whose domain is all real

), then the derivative is


and similarly the domain of

is all real

.
Please clarify your question if this is not the right interpretation of

.
Answer: option d
Step-by-step explanation:
Remember the identity:

The inverse of the tangent function is arctangent. You need to use this to calculate the angle "S":
Knowing that: you need to find the measure of the angle "S" ,
(which is the adjacent side) and
(which is the opposite side), you can sustitute values into 
Then, you get that the measure of "S" rounded to the nearest tenth is:

-√(81/9)+11 = -√9 +11 = -3+11 = 8
2√(100/4) - 23 = 2*√25 - 23 = 2*5 - 23 = -13