Assume that the u. s. ppf measures steel production on the x-axis and production of services on the y-axis. if robots are the only technological advance, a. the u. s. ppf does not change b. the u. s. ppf shifts outward, increasing the x-axis intercept and the y-axis intercept c. the u. s. ppf rotates outward, increasing the x-axis intercept with no change in the y-axis intercept d. the u. s. ppf rotates outward, increasing the y-axis intercept with no change in the x-axis intercept

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explanation:

lol

rain should be the answer.

i truly dont know the answer wait i do its 1,3,4

changes in factors like average income and preferences can cause an entire demand curve to shift right or left. this causes a higher or lower quantity to be demanded at a given price. demand curves relate the prices and quantities demanded assuming no other factors change. it is important for consumers to know this information, because it is crucial for them to know what they can afford and can't afford. i hope this .