Answer:
- 1
Step-by-step explanation:
( x, y ) = ( 2, y )
x = 2
2x - 8y = - 4
Divide 2 on both sides,
( 2x / 2 ) - ( 8y / 2 ) = - 4 / 2
x - 4y = - 2
Substitute x = 2,
2 - 4y = - 2
- 4y = - 2 - 2
- 4y = - 4
y = - 4 / - 4
y = - 1
Just take the amount of sugar she has (5 1/2) and divide it equally among the amount of sugar needed for each batch (3/4). You get 7.33, but since you want a complete batch (no decimal numbers), the answer is 7.
I hope this helps you understand :)
D is the answer to this question i learned this last year