Verified Answer :

The best expression would be:
Cost= 25 +0.2*25

Answer:

\(25+(20\% \times 25)\)

Step-by-step explanation:

Given : A restaurant bill is $25, and a 20 percent tip should be given to the waiter.

To Find: which expression can be used to find the total amount that will be paid

Solution:

A restaurant bill is $25.

A 20 percent tip should be given to the waiter.

So, Tip = \(20\% \times 25\)

So, total amount that will be paid = \(25+(20\% \times 25)\)

                                                       = \(25+(\frac{20}{100} \times 25)\)  

                                                       = \(25+5\)  

                                                       = \(30\)  

Thus the total amount is $30

Hence the expression can be used to find the total amount that will be paid  is    \(25+(20\% \times 25)\)