In a competition, the contestants are being judged on creativity, worth 50%, execution, worth 30%, and style, worth 20%
Alisha received the following scores.
Creativity: 18, 16, 15, 16
Execution: 20, 19, 20, 18
Style: 12, 15, 14, 13
What is Alisha's final score?
Enter your answer, as a decimal, in the box