Answer:
The second option will cost her less than the first one.
Step-by-step explanation:
In order to solve this problem we will create two functions to represent the cost of the car in function of the miles drove by her.
For the first option we have:

For the second option we have:

Since she intends to drive it for 10,000 miles per year for 6 years, then the total mileage she intends to drive her car is 60,000 miles. Applying this to the formula of each car and we have:


The second option will cost her less than the first one.
The square root of -48 is 2 because 2x2x2x2x2x2x is not -48
They each got 4 dollars because all the $ added up will be 16 and it divided by the 4 kids 16 •|• 4= 4