Acafe only sells two types of sandwiches, turkey and steak. the cafe charges $4 for turkey sandwiches and $6 for steak sandwiches. last month, the cafe sold $4524 worth of sandwiches. the cafe sold a total of 925 sandwiches.

how many turkey sandwiches did they sell?

enter your answer in the box.

X = number of turkey sandwiches

Y = number of steak sandwiches

X   + Y    = 925 total sandwiches sold

4X + 6Y = 4524 dollars made

-4(X + Y = 925)

-4X + (-4Y) = -3700

 4X +  6Y    = 4524

           2Y    = 824

Y = 412

X + Y = 925

X + 412 = 925

yes because there is exactly one y value for every x value

for function there can't be more than one value for every x value