It would be D, (-2, -3), which is in the 3rd quadrant.
If f(x) is decreasing for all x then is is concave down.
Answer:
The answer is C.
Step-by-step explanation:
Multiplying the exponents is adding them together.
Answer:

Step-by-step explanation:
* Lets explain how to solve the problem
- The rule of expand the binomial is:

∵ The binomial is 
∴ a = 10k , b = -m and n = 5
∴ 
∵ 5C1 = 5
∵ 5C2 = 10
∵ 5C3 = 10
∵ 5C4 = 5
∵ 5C5 = 1
∴ 
∴ 