They don’t have anything in common
I assume the equation is

then let
.


The right side is real-valued and positive, and only on the left side do we have an imaginary term, which tells us

Then




but again we omit the negative solution, so that

The answer is b. 38 divided by 10 equals 3.8
8 + 6.50 = 14.50
22.00
- 14.50
-----------
7.50
answer : liu's meal was $7.50