In 2007, the population of North America was approximately 5.15 x 10^8 people and the population of South America was approximat
ely 3.04 x 10^8 people. What is the combined population of North and South America for this year? A) 8.19 x 10^16 people
B) 8.19 x 10^9 people
C) 8.19 x 10^8 people
D) 8.19 x 10^64 people
