Final answer:
Santiago can drive his car 255.2 miles using 8 gallons of gas, according to the equation y = 31.9x.
Step-by-step explanation:
The student's question asks how many miles Santiago can drive his car with 8 gallons of gas using the equation y = 31.9x, where y represents the number of miles and x represents the gallons of gas. To find the answer, we simply substitute x with 8 gallons in the equation:
y = 31.9 Ă— 8
This yields:
y = 255.2 miles
Therefore, Santiago can drive his car 255.2 miles using 8 gallons of gas.