What is the answer to this problem

A

Step-by-step explanation:

let x= pizza y= soda

kay:

x+y=4

Mark:

6x+2y=18

From kay's equation

x= 4-y

substiute that into mark's

6(4-y)+2y=18

24-6y+2y=18

-4y= -6

y= 1.5

Plug in y= 1.5 in either equation to solve for x

x+1.5=4

x=2.5

So a pizza is 2.5 and a soda is 1.5

the answer must be A

it would open into a square depending on the type of envelope i’m not sure about the second part

multiplication is multiplication.   it might feel harder depending on what level of math you are in, but generally it will be the same old stuff, while implementing some new concepts and methods of solving work.