Respuesta :

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

Answer:

[tex]25+(20\% \times 25)[/tex]

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 = [tex]20\% \times 25[/tex]

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

                                                       = [tex]25+(\frac{20}{100} \times 25)[/tex]  

                                                       = [tex]25+5[/tex]  

                                                       = [tex]30[/tex]  

Thus the total amount is $30

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