Answer:
Option B: 
Step-by-step explanation:
To obtain the inverse of the function 
, you need to solve the equation for the variable "x":
Now you need to exchange the variable "x" with the variable "y". Then:
Finally, you get that the inverse of the function is:
This matches with the option B.
Answer:
C. Stratified Sampling
Step-by-step explanation:
Stratified sampling is a sampling method in which the overall population is divided into a number of smaller sub groups.
These smaller sub-groups are called as strata.
These sub-groups are formed on the basis of similar characteristics and attributes shared by the population.
It is also known as proportional random sampling.
Pretend DK and ML are parallel lines. Then MK is a line crossing the parallel lines. Angles KML and DKM would be alternate interior angles there fore the angle would be the same, 82.
