A dozen eggs cost $0.88 in january 1980 and $2.11 in january 2015.

a. by what percentage did the price of eggs rise?

Initial price = $0.88 (Jan. 1980)

Final price = $2.11 (Jan. 2015)

Change in price = $2.11 - $0.88 = $1.23

Percentage rise in price = 100 (1.23/0.88) = 139.8% ≈ 140%

The average yearly rise in price = 139.8 / (2015-1980) ≈ 4%

Answer:

Total percent rise in price = 140%

Average yearly rise in price = 4%