The population of a certain city increases by 2.3% per year. Assuming the population was 7.6 million, what is the population expected to be by 2010? what was the population in 1980?

I assumed the base year is 2017

; because the time is not mentioned

So 2017-2010=7 years

P=7,600,000: (1+0.023) ^ (7)

P=6,481,628.81

2017-1980=37

P=7,600,000: (1+0.023) ^ (37)

P=3,276,537.51