Aman has an old truck that gets 15 miles per gallon. in january, he started using his bike to commute to and from work. he lives 9.8 miles away from his job site. gasoline during the month averaged $3.75 a gallon. how much money did he save on gasoline if he rode his bike to and from work 18 times instead of driving?

To begin, you need to find the overall mileage he would have traveled. You can find this by taking 36 (the amount of total trips made) and multiplying it by 9.8 miles.

36 x 9.8 = 352.8

Divide 352.8 by the 15 miles per gallon, giving you 23.52 gallons. 

Finally, multiply the gallons by the price ($3.75) and you will find your answer, which is $88.20.

A ray is defined using undefined terms point and line. Think of it this way, a ray has a point and line, but how do you know what someone is talking about if they just use the term "point and line"? Well, in geometry a circle could consist a point and line for finding the diameter, but that is not specific enough. So, next we go to the next option angle, well, yes, a angle could consist a point and a line, but still the term "point and line" does not 100% fit the term. Third, we have parallel lines. Parallel lines do consist a line and sometimes a point to show distance in geometry, but still... not specific enough. Finally , we have the option ray, now, rays do consist of a point and a line, and the term "point and line" fits perfectly with the optian ray.