Answer:

Step-by-step explanation:
y = 3 - 4ln(1 - x)
⇒ 
⇒ 
⇒ 
⇒ 
Step-by-step explanation:
Let the measure of required angle be x degree

Thus, first option is the correct answer.
Answer:
Wave length = speed / frequency
Wave length = 3x10^8 / 4.11x10^4
Wave length = 7.299x10^3nm
Step-by-step explanation:
(-5,2) concave up
Hope this helps :)