What is the difference between economies of scale, constant returns to scale, and diseconomies of scale

Economies of scale: occur when total costs for the firm go down as the firm increases output. This is why in some industries, large firms are more profitable that small firms.

Constant returns to scale: the property that occurs when increasings in factors or production (labor, capital) lead to the same increase the amount of goods or services produced.

Diseconomies of scale: this is the opposite to economies of scale. Occurs when firms experience higher costs due to larger production. They mostly occur due to coordination issues that arise when firms become to large to manage well.

if you use only 25 for your entertainment and only 200 for the groceries that you really need and take out the 50 per month for the computer then that should be enough

i'ts proportional. if the inflation rate is 12% for example, the cpi will be 12% less.

hope it ,

bioteacher101