The Monthly Charge for Water in a Small Town Is

question 106

Multiple Choice

The monthly charge for water in a small town is given by , where x is water usage in hundreds of gallons and f (x) is cost in dollars. Find the monthly charge for 1900 gallons and for 2600 gallons. Round your answers to the nearest cent. ​

• A) charge for 1900 gallons is $36.00 Charge for 2600 gallons is $38.40
• B) charge for 1900 gallons is $788.00 Charge for 2600 gallons is $1068.00
• C) charge for 1900 gallons is $36.00 Charge for 2600 gallons is $46.40
• D) charge for 1900 gallons is $38.40 Charge for 2600 gallons is $46.40
• E) charge for 1900 gallons is $36.00 Charge for 2600 gallons is $74.40

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Definitions:

Filtering Process

A method used to separate solid particles from a liquid or gas by passing it through a filter medium that allows only the fluid to pass through.

Water Softener

A device or system used to remove minerals that cause hardness in water, typically involving the exchange of calcium and magnesium ions with sodium or potassium ions.

Standard Deviation

A measure of the amount of variation or dispersion of a set of values, used in statistics to quantify the spread of a data set.

Significance Level

The probability of rejecting the null hypothesis in a statistical test when it is actually true; a threshold used to determine the critical value at which the observed data is considered statistically significant.