Answer:
25 pounds, hope its right
Step-by-step explanation
Answer: C = 40 + 3m
Step-by-step explanation: c = total amount of cash and 40 is the starting fee and m = miles that are driven times 3 which is amount per mile
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Using the z-distribution, it is found that a sample of 171 should be selected.
<h3>What is a z-distribution confidence interval?</h3>
The confidence interval is:

The margin of error is:

In which:
is the sample mean.
is the standard deviation for the population.
For this problem, the parameters are:

Hence we solve for n to find the needed sample size.





n = 170.7.
Rounding up, a sample of 171 should be selected.
More can be learned about the z-distribution at brainly.com/question/25890103
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The answer to 4 1/5 divided by 2 4/5 is 3/2