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Here is what a question looks like
Algebra
During a road trip, the remaining fuel in a tank, in gallons, is modeled by the linear function f(d) = 18 - 0.04d, where d is the distance driven in miles.
What does the value -0.04 represent in this context?
- A. The change in fuel, in gallons, for each mile driven
- B. The amount of fuel, in gallons, remaining after 1 mile
- C. The initial amount of fuel in the tank, in gallons
- D. The distance that can be driven per gallon of fuel
Show the answer
A. The change in fuel, in gallons, for each mile driven
In f(d) = 18 - 0.04d, the coefficient of d is the rate of change: the fuel changes by -0.04 gallon for each mile driven.