Y=-2x-2 is the right answer
Answer:
12
Step-by-step explanation:
This is a joint variation problem:
z varies directly as x and y
Interpreting this;
z ∝ xy
Therefore;
z = kxy
z = 6, x = 2, y = 6
Now find k,
6 = 2 x 6 x k
6 = 12k
k =
To find the value of z;
x = 3, y = 8
z = x 3 x 8 = 12
If the question is, "What is the scale factor." That would be a scale (factor) of 2.
Its .03311258 if you wanna round its about .33
If she needs 1,000 ribbons at 3.72 inches each, She will need 1,000 x 3.72 which equals 3720 inches of ribbon.
This can be converted into feet by taking 3720 inches and dividing by 12 inches in a foot.
This will an answer of 310 feet.