Question 1093661
Too simple.  The description and the expressions speak for themselves.

x, the price of one hamburger
y, the price of one serving of french fries


{{{x+y}}}, the COST for one hamburger and one serving of french fries


Are  {{{3(x+y)}}} and {{{3x+3y}}} equivalent?
You know now what is x, what is x+y, and should know what each of 3x and 3y means here.