8 t ^ 2 + 4 t ^ 2 - 8 4 t
Answer:
She needs 78 inches of fabric.
Step-by-step explanation:
The rule for the amount of fabric that needs to be bought is:
Where "x" is the distance from the waist to the finished length of the pants. Since Amy's is 35 inches, the amount of fabric is:
She needs 78 inches of fabric.
Let x= the total volume of liquid the bottle can hold.
Since 40% of the liquid is water, then .4x = 1L
Then you solve for x.
0.4x=1L
0.4x/0.4 = 1L/0.4
x = 2.5 L
So we have the total volume of the bottle which is 2.5 L.
Now, let the number of liters of lemon juice be y.
y=0.6x
So the equation would be x = 0.4x + y
or simply, x = .4x + .6x
Solve for y.
<span>y= 0.6(2.5L)
y= 1.5L</span>
So the amount of lemon juice in the bottle is 1.5 L.