I got it wrong on khan academy and this is what it said....
In conclusion, point M represents a scenario where the mixture has the intended volume and has more than the intended percent of butterfat.
The rational expression

will be undefined where the denominator is zero. Values of v that make the denominator zero are v=3 and v=-2.
Excluded values of v are -2 and 3.
Answer:
y=2x/5-4x
Step-by-step explanation:
multiply z-4y on both sides,match the Ys together and then make y common
Answer: x > − 4
Step-by-step explanation: Divide each term in − 4 x < 16 by − 4 and simplify.
(Try to solve b. and c. with only these resources and if you still need help, let me know.)
Answer:
Please see the attached pictures for full solution.