Based on the number line, the amount that represents the amount of Carrie's gas bill in dollars is B) 75.
A number line is a pictorial representation of numbers or values on a straight horizontal line.
The numbers, integers, or values are placed at equal intervals.
Moving to the right of the number line shows addition or a positive value while moving to the left of the number line indicates subtraction or a negative value.
Thus, Carrie's gas bill is not -75 but 75 since a positive amount represents the amount of money due by Carrie.