For this exercise you can convert from mixed numbers to decimal numbers.
To do this, you need to add the whole number part and the quotient obtained by dividing the numerator by the denominator of the fraction. Then this is:
Finally, you can make the conversion from pounds to ounces.
Since , you get that the total ounces of corn the Johnsons sold to 15 customers is:
The relationship is given by the quotient between the two variables: (1) distance of the storm, and (2) the number of seconds to hear the thunder. That is: