What inverse
operation do
we use to get
the variable
term alone?

Subtraction

Step-by-step explanation:

First, use inverse operations (subtraction) to get the term that includes a variable, by itself on one side of the equal sign.

distance covered by pamela in 9 l of fuel = 99km

let us apply unitary method here.

distance covered by pamela in 1 l of fuel =99/9 =11 km

now let us find distance covered by pamela if she has 12 l of fuel.

distance covered in 12 l = distance covered in 1 l of fuel * 12

we know that distance covered by here in 1 l is 11 km.

so distance covered in 12 l of fuel = 11*12 = 132 km.

215.92 dollars is the answer