Section 1

mpg - Miles/(US) gallon
cyl - Number of cylinders
disp - Displacement (cu.in.)
hg - Gross horsepower
drat - Rear axle ratio
wt - Weight (1000 lbs)
qsec - 1/4 mile time
vs - Engine (0 = V-shaped, 1 = straight)
am - Transmission (0 = automatic, 1 = manual)
gear - Number of forward gears
carb - Number of carburetors

Section 2

\[mpg =\frac{miles\;traveled}{gallons\;of\;gas}\]

Section 3