The correct way is to plug in the answer back into the equation and see if it results in the correct solution.
Since she has $6 off for all the pizzas, she can get 10 pizzas with a $6 discount.
She would save $6 since, she has the discount and she would still have something left so she could buy something more if she wished to.
Answer:
Depends how much is half a gallon in her car
usally a car has 100+ space for gallons
if she has any less than 50 gallons max
she won’t make it
so she probley will if she has more than 26 gallons of gas at half a tank
