Multiple Choice
A marina charges $20 to rent a jet ski for 1 hour, plus $10 for every extra hour (or portion of an hour) . In the illustration, h represents the number of hours and c represents the cost. Find the cost if the ski is used for 2.5 hours.
A) $40
B) $30
C) $45
D) $55
E) $60
Correct Answer:

Verified
Correct Answer:
Verified
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