Mr william pays $40 a month for city water no matter what how many gallons of water he uses in a given month let x represent the number of gallons of water used per month let y represent the monthly cost of the city water in dollars what is the equation of the line that represents this information what is the slope of the line

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Achemist has 200 ml of a 10% sucrose solution. she adds x ml of a 40% sucrose solution. the percent concentration, y, of the final mixture is given by the rational function: the chemist needs the concentration of the final mixture to be 30%. how many milliliters of the 40% solution should she add to the 10% solution to get this concentration?

The final cost of a sale is determined by multiplying the price on the tag by 75%. which best describes the function that represents the situation?