Answer:
The maximum amount of meat that the butcher can sell is 
Explanation:
The maximum amount can be found by taking the difference of mixed numbers.

Best Regards!
I think everything looks good but 2 might not be right, it might be B
Answer:
Position A/Position E
, 
Position B/Position D
,
, for 
Position C
, 
Explanation:
Let suppose that ball-Earth system represents a conservative system. By Principle of Energy Conservation, total energy (
) is the sum of gravitational potential energy (
) and translational kinetic energy (
), all measured in joules. In addition, gravitational potential energy is directly proportional to height (
) and translational kinetic energy is directly proportional to the square of velocity.
Besides, gravitational potential energy is increased at the expense of translational kinetric energy. Then, relative amounts at each position are described below:
Position A/Position E
, 
Position B/Position D
,
, for 
Position C
, 
usually gravity is what causes us to make us weigh more or less depending on which planet we are on