A tip is an additional payment which is voluntary contributed to the waiter to credit his efforts or service. In this case,the tip is 15%. from the original cost of $247.62, the total cost sam has to pay is $247.62 * 1.15 equal to $284. 763. it is expected to have a larger payment.
Hope you understand it and see what I did.
Answer:
0
Step-by-step explanation:
So we have the expression:

And we want to evaluate it for x=-4 and y=8.
So, substitute:

Multiply:

Add:

Evaluate:

So, our answer is 0.
And we're done!
There no awnser to give if you dont give a pictre or anything?