Question

lester and jasmine are going on a road trip together. they have a limited budget, so they consider several different routes and calculate the cost of gas for each route. the cost of gas for each route depends on the length of the route.
(g) = the cost of gas
(r) = the length of the route

which of the variables is independent and which is dependent?
(g) is the independent variable and (r) is the dependent variable
(r) is the independent variable and (g) is the dependent variable

Explanation:

An independent variable is the factor that is controlled or changed, and the dependent variable is the outcome that depends on the independent variable. Here, the gas cost ($g$) changes based on the route length ($r$), so $r$ is the independent variable and $g$ depends on it.

Answer:

r is the independent variable and g is the dependent variable