The information we have is:
5 drops of flavor are needed for 12 ounces of water.
To solve the problem, first we need to find the amount of drops needed per ounce of water, and then multiply that by the number of ounces that we need which is 1280.
The number of drops per ounce:
To find this, divide 5 drops by 12 ounces:

5/12 drops are needed per ounce.
The number of drops in 1280 ounces:
Now we multiply 5/12 by 1280:

And the result is:

The number of drops needed is: 533.333
Answer: 533.333 Drops
Answer:
(-4,-1)
Step-by-step explanation:
Assuming the graph is the one shown in the attachment.
The forward sloping line has a slope of 1 and a y-intercept of 3.
The equation of this line is y=x+3
The horizontal line has a slope of 0 and y-intercept of -1.
It's equation is y=-1
The two lines intersect at (-4,-1)
Answer:

Step-by-step explanation:
{x -4y = −21
{8y - x = 45
_________

[Plug this back into both equations above to get the x-coordinate of 3]; 
I am joyous to assist you anytime.