Respuesta :
Answer:
Option B is the correct answer.
Step-by-step explanation:
Let the price per plate of loaded nachos, buffalo wings, and cheese sticks be n, b and c.
One group buys 2 plates of buffalo wings and 1 plate of cheese sticks, and spends $23.
That is
2b + 1c = 23
2b + c = 23 ----------------------eqn 1
Another group spends $30.75 to buy 3 plates of loaded nachos and a plate of buffalo wings
That is
3n + 1b = 30.75
3n + b = 30.75 ----------------------eqn 2
A third group buys one of each appetizer, spending $22.25
That is
n + b + c = 22.25 ---------------------eqn 3
eqn2 - eqn3
2n - c = 8.5 ---------------------eqn 4
eqn 1 + eqn 4
2b+ 2n = 31.5
b + n = 15.75 ---------------------eqn 5
eqn 3 - eqn 5
c = 6.5
Substituting in eqn 4
2n - 6.5 = 8.5
n = 7.5
Substituting in eqn 3
7.5 + b + 6.5 = 22.25
b = 8.25
Price of nachos n = 7.5 $
Option B is the correct answer.