9. [-/12 Points] DETAILS UWAPRECALC1 12.P.012. MY NOTES The cities of Abnarca and Bonipto have populations that are growing exponentially. In 1980, Abnarca had a population of 23,000 people. In 1990, its population was 28,000. Bonipto had a population of 37,000 in 1980. The population of Bonipto doubles every 55 years. (Round your answers to the nearest whole number.) (a) How long does it take the population of Abnarca to double? 1 yr (b) How long will it take for Abarca's population to equal that of Bonipto? yr Additional Materials Reading