Section 1

mpg: miles per gallon
cyl: number of cylinders
disp: displacement
hp: gross horsepower
drat: real axle ratio
wt: weight(1000lbs)
qsec: 1/4 mile time
vs: engine(0 = vshaped, 1 = straight)
am: transmission(0 = auto, 1 = manual)
gear: Number of forward gears
carb: number of carburetors

Section 2

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

Section 3