Question

The equation, y = 76(1.013)x, represents the the population of the United States, after 1900, in millions. The population in 1900 (x = 0) was..?

A. 1.0123 million
B. 76 million
C. 76.988 million
D. 77 million

Answer 1

I assume that the equation is supposedly written as, y = (76)(1.013^x). This means that the population of the United States increases by 1.3% every year. If we substitute 0 to the value of x,
y = 76(1.013^0) = 76(1) = 76
I assume that the unit for y in the equation is million. Therefore, the answer is letter B. 76 million.