If f(x)=69-15x then 
Given :

Lets find out
. The steps to find out f inverse are
Replace f(x) by y

Now we find 
Replace inverse function in the place of x in f(x)

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brainly.com/question/11242094
Answer:
y = 2x + 1
Step-by-step explanation:
formula for equation of graph:

substitute m = 2 and c = 1 into the equation

Answer:
This isn't the best worded question but from what I understand a larger sample size decreases the margin of error. If he would like a more accurate answer a larger sample size of the viewers will give more accurate answers.
Step-by-step explanation:
I need to see the diagram in order to answer your question.