Which of the following illustrates economies of scale , diseconomies of scale , and constant returns to scale ? Liza's average total cost changes from $4.50 to $2.20 when she increases salad production from 7 to 9 an hour. Sam's average total cost changes from $1.30 to $2.80 when he increases smoothie production from 5 to 8 gallons an hour. Tina's average total cost remains at $3 when she increases pizza production from 12 to 13 an hour.

a. Sam faces economies of scale; Liza faces diseconomies of scale; Tina faces constant returns to scale.
b. Sam faces economies of scale; Tina faces diseconomies of scale; Liza faces constant returns to scale.
c. Tina faces economies of scale; Sam faces diseconomies of scale; Liza faces constant returns to scale.
d. Liza faces economies of scale; Sam faces diseconomies of scale; Tina faces constant returns to scal

d. Liza faces economies of scale; Sam faces diseconomies of scale; Tina faces constant returns to scale

Explanation:

Economies of scale occurs when the increase in production by companies brings about a reduction in cost. Diseconomies of scale is when a rise in production leads to an increase in cost as well. For a constant return to scale, the cost remains the same.

Therefore, the answer will be option D "Liza faces economies of scale; Sam faces diseconomies of scale; Tina faces constant returns to scale".

the correct answer is:

it required the president to inform congress within forty-eight hours of any new troop commitment.

the war powers resolution (1973) is a federal law designed to limit the u.s. president’s ability to initiate or intensify military actions abroad without the approval of the congress.

it establishes that the president can send armed forces into action abroad only by declaration of war by congress, statutory authorization, or in case of a national emergency created by attack upon the united states, its territories or possessions, or its armed forces.

it requires the president to notify congress within 48 hours of sending armed forces to military action.

say it in english maybe we can