Answer:
Step-by-step explanation:
1 pie calls for 1 1/4 cups of sugar....so 4 pies calls for :
4 * 1 1/4 = 4 * 5/4 = 20/4 = 5 cups of sugar
she has 1/2 a cup....so she still needs 5 - 1/2 = 4 1/2 cups <==
x=-6
So you can write this as 10x-8x+2+10=0
Now you have to solve this equation for x
2x+12=0
2x=-12
Hope this helps :)
y = 2x - 81