Dr. Gaskell's car gets x miles to the gallon and his sport utility vehicle gets eight miles less per gallon than his car. Which expression would best represent the miles per gallon each vehicle gets?

sine

step-by-step explanation:

or

step-by-step explanation:

we need to solve for 'x' the following equation:  

we have that:

⇒

⇒ ⇒

factorizing, we get that:

  ⇒

then, the solutions are: or

nothing extraneous has been found!

thats not a system of equations, that is a solution