I think is going to be
A=1
B=43
I WISH IF YOU LOOKING FOR
Answer:
A sample size of at least 737 specimens is required.
Step-by-step explanation:
We have that to find our
level, that is the subtraction of 1 by the confidence interval divided by 2. So:

Now, we have to find z in the Ztable as such z has a pvalue of
.
So it is z with a pvalue of
, so 
Now, find the width M as such

In which
is the standard deviation of the population and n is the size of the sample.
In this problem, we have that:

So:





A sample size of at least 737 specimens is required.
The y-intercept of the function is $60
The function can be represented by the equation y=1/10x+60
The range is {y| y <span>≥ 60}</span>
The point-slope form:

We have the point (8, -4) and the slope m = -56. Substitute:

The answer is equal to 300.