Identify the initial amount an and the growth factor b in the exponential function.
A(x)=680•4.3^x
The initial amount (also known as the starting value or y-intercept) in the exponential function A(x) = 680 • 4.3^x is 680.
The growth factor (also known as the base or multiplier) in the exponential function A(x) = 680 • 4.3^x is 4.3.