Determine the effect of short-run aggregate supply of each of the following events. Explain whether it represents a movement along the SRAS curve or a shift of the SRAS curve.
a. A rise in the consumer price index (CPI) leads producers to increase output.
b. a fall in the price of oil leads producers to increase output.
c. A rise in legally mandated retirement benefits paid to workers leads producers to reduce output.

Oz makes lion food out of giraffe and gazelle meat. giraffe meat has 18 grams of protein and 36 grams of fat per pound, while gazelle meat has 36 grams of protein and 18 grams of fat per pound. a batch of lion food must contain at least "46,800" grams of protein and 70,200 grams of fat. giraffe meat costs $1/pound and gazelle meat costs $2/pound. how many pounds of each should go into each batch of lion food in order to minimize costs? hint [see example 2.]