Solve the Problem. -The Cost for Labor Associated with Fixing a Washing Machine

question 27

Multiple Choice

Solve the problem.
-The cost for labor associated with fixing a washing machine is computed as follows: There is a fixed charge of $25 for the repairman to come to the house, to which a charge of $20 per hour is added. Find an equation that
Can be used to determine the labor cost, C, of a repair that takes x hours. Write the final answer in the form C =
Mx + b.

• A) C = 45x
• B) C = -20x + 25
• C) C = 20x + 25
• D) C = 25x + 20

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Definitions:

Mean

The average of a set of numbers, calculated by dividing the sum of these numbers by the count of numbers.

Confidence Interval

A selection of values from sample-related statistics, presumed to hold the value of an undetermined population characteristic.

Population Mean

The average of a set of characteristics (e.g., measurements, counts) of the entire population.

Standard Error

A statistic that measures the dispersion or variability of a sampling distribution, often used in estimating parameters.