Me ! ? i dont understand how do i get the prices !

x=1.3

Step-by-step explanation:

theres multiple ways to solve a system of equations. my favorite is substitution. basically u make one of the variables by himself represent a value that has the other variable in it

3x + 4y = 7.1

2x+y=3.40

Im gonna use the second equation because the y is already all by himself.

3x+4y=7.1

y=3.40-2x

Then u substitute for the y in the other equation to find the price of the burger :)

3x+4(3.40-2x)=7.1

3x+13.6-8x=7.1

13.6-5x=7.1

-5x=-6.5

x=1.3

i think the answer is b

i have not got your picture clearly so see it once again