Camila has 11 gallons of gas in her car at the beginning of a trip. Every hour Camila drives, she uses 2.5 gallons of gas. Answer the questions below regarding the relationship between the gallons of gas remaining in the tank and the total hours driven.
The independent variable, x, represents the
, and the dependent variable is the
, because the
depends on the
.
A function relating these variables is V, left bracket, x, right bracket, equalsV(x)=
.
So V, left bracket, 3, right bracket, equalsV(3)=
, meaning 33
.
The independent variable, x, represents the total hours driven, and the dependent variable is the gallons of gas remaining in the tank, because the gas remaining in the tank depends on the total hours driven.
A function relating these variables is V(x), which represents the gallons of gas remaining in the tank.
So V(3) equals V(3) = 11 - (2.5 * 3) = 11 - 7.5 = 3.5, meaning there are 3.5 gallons of gas remaining in the tank after driving for 3 hours.