Which situation is best modeled by an exponential function with time as the
independent variable?
A. an investment that takes 2 years to increase in value by $50 and
10 years to increase in value by $250
B. an investment that increases by a constant factor of 1.03, or at a
rate of 3%, every year
OC. an investment that increases by $30 every year
D. an investment that increases by $1 every 2 weeks