The cost per student, c, needed for the class trip varies inversely as the number of students, s, going on the trip. If the trip
1 answer:
You might be interested in
Answer:
Wilma has $12.
Step-by-step explanation:
Since we don't know how many hours she worked, we know that Wilma earned 9x dollars at her job. Then she spends $15, so we can just subtract 15 from 9x.
We can just replace the x with 3 to get:
Hence, Wilma has $12.