-7--8=56
O True
O False

5x + 8y = 66, x + y = 9.

Where, x = people who ordered sandwich for $5

y = people who ordered a combo for $8

Step-by-step explanation:

Let x be the number of people who ordered only a sandwich for $5 and y be the number of people who ordered a combo for $8,

So, the total number of people = x + y,

Since, there are 9 people ( Sonji and her 8 friends ),

⇒ x + y = 9,

Also, the amount paid by them = 5x + 8y

Given, they paid totaled $66.00,

⇒ 5x + 8y = 66,

Hence, the system of equations that represents the number of meals of each type that Sonji and her friends purchased is,

5x + 8y = 66, x + y = 9.