Final answer:
Jina must drive 18.3 more miles to reach her workplace. The calculation involves subtracting the distance already driven, 2.7 miles, from the total distance of 21 miles.
Step-by-step explanation:
The student's question, how many more miles must Jina drive to get to work, involves a simple subtraction problem in mathematics. Jina needs to drive a total of 21 miles to work and has already driven 2.7 miles. To find out the remaining distance, we subtract the distance she has already covered from the total distance:
- Total distance to work: 21 miles
- Distance already driven: 2.7 miles
- Remaining distance: 21 miles - 2.7 miles = 18.3 miles
Jina must drive 18.3 more miles to reach her workplace.