$7.95
1) Considering that the dinner cost was $53, and we need to find out the tip equivalent to 15% of that cost, we need to calculate it this way:
2) We can multiply that 53 by 15% and then simplify it to get the answer:
[tex]53\times\frac{15}{100}=\frac{795}{100}=7.95[/tex]3) So, we can state that the tip due to the waiter is $7.95