Answer: 6 m
This statement:
"Jared has run two-thirds of an 18-kilometer race" can be written as an equation:

This means two-thirds of 18 km is equivalent to 12 km
If we substract this value to the total, we have the values of the kilometers left to run:

Therefore the correct option is D
If it was in standard notation it would be very confusing to add the number of cells and it would be less organized.
Answer:70
Step-by-step explanation: