Answer:
The percentage increase of the price of a gallon of gas from 1992 to yesterday is 78.7%.
Step-by-step explanation:
Consider the provided information.
In 1992 Jason bought a gallon of gas for$1.22
Yesterday he bought a gallon of gas for$2.18
The increment in price can be calculated as:

We need to calculate the percentage increase of the price of a gallon of gas from 1992 to yesterday.
Which can be calculated as shown below:
78.68%
Round to the nearest tenth of percent 78.7%.
Hence, the percentage increase of the price of a gallon of gas from 1992 to yesterday is 78.7%.