Answer:

And we can use the cumulative distribution function given by:

And for this case we can write the probability like this:

And then the final answer for this case would be 
Step-by-step explanation:
For this case we define our random variable X "price of gasoline for a city in the USA" and we know the distribution is given by:

And for this case the density function is given by:

And we want to calculate the following probability:

And we can use the cumulative distribution function given by:

And for this case we can write the probability like this:

And then the final answer for this case would be 
The range of the function is all real numbers greater than 0.
As the domain values increase, the range values decrease.
Each successive output is the previous output divided by 3.
Earnest will have to use the 1/4 cup because the measurements are made by fourths and the 1/2 is equivalent to 1/4 because 3/4 + 1/4=1 whole