Which of the following are examples of opportunity costs? check all that apply.

__ a firm cannot buy new treadmills for its on-site gym facility once it spends this money on new adjustable desks for employees.
__ the money spent on a movie ticket cannot buy a blu-ray player.
__ the time spent preparing for a test cannot be spent playing computer games.

The answer is a and c I know this because if you spend time or money on on something you can not do the other and that is exactly what is happening.

start by isolating the variable on one side by adding 43w^2 to both sides.   the equation will read:

25w^2+5=0

*subtract 5 from both sides*

25w^2=-5

*divide both sides by 25*

w^2=-1/5

*take the square root of both sides*

w=√(-1/5)

the square root of -1 is i.   the square root of 5 remains √5

the answer is i/√5.

hope this