How would you use rates and units to express prices for gasoline?
Every gas station prominently posts the price per gallon.
Example: 3.91/gal
so is this how i use rates and units.
Yes. This web site explains more.
http://www.educationplace.biz/math/mathsteps/6/e/index.html
Describe an application for the use of ratios or proportions that is not mentioned in your text, or describe how an application problem in the text could be useful in your daily life.
To express prices for gasoline using rates and units, you would typically use the unit of currency (e.g., USD) and the unit of volume (e.g., liters or gallons).
1. Convert the price per liter or gallon to the chosen unit of currency. For example, if the price is given in cents per liter, divide by 100 to convert it to dollars per liter.
2. Determine the unit of volume being used by referring to the measurement specified (liters or gallons).
3. Write the price as a rate, with the unit of currency in the numerator and the unit of volume in the denominator. For example, if the price is $1.50 per liter, the rate would be $1.50/L. If the price is $2.50 per gallon, the rate would be $2.50/gal.
By expressing the price in terms of rate per unit of volume, you enable easy comparison between different fuel options and help consumers make informed decisions based on cost efficiency.