Annual oil production for a region was about 530 million tons in 1950. Production increased at a rate of 7.9% per year between 1950 and 1972, but the rate of growth then slowed. The oil production reached approximately 4.8 billion tons per year in 2016. Complete parts (a) through (d) below a. Using the growth rate of 7.9% for the period 1950 to 1972, approximately what was the oil production in 1972? The oil production is approximately billion tons in 1972. (Round to one decimal place as needed.) an example Get more help. Clear all 81 Check answer A 5:42 PM 9/23/2022