Its C. He substituted incorrectly when calculating the constant of variation.
Reason: He said so
Answer:
6
Step-by-step explanation:
8 * 3/4 = 24/4 = 6 WATER BOTTLES
Solution:
Let the bottle of sunscreen cost be $x. Then we can write
($x+ $6.50)+6%($x+ $6.50)=$16.43
Now solve this for x as below


Hence the bottle of sunscreen cost $9.
15 I think i'm sorry if i'm wrong
I am not sure is you are supposed to solve or rewrite but for solving its this picture, tell me if its rewriting the problem and ill give you that as well!