For the first 25 If they all share 25 pounds to a pound each the second I don’t understand

No real solutions, because for all real numbers the square of number is greater or equal 0.
Some textbooks describe direct variation by saying " y varies directly as x ", " y varies proportionally as x ", or " y is directly proportional to x . ") This means that as x increases, y increases and as x decreases, y decreases—and that the ratio between them always stays the same.
X=5 is your answer to this
Answer:
4 units
Step-by-step explanation:
The radius of a circle is half the diameter of a circle
Have fun!!