SAT Math· difficulty 4/5
A population grows from 100 to 200 in 5 years, then to 400 in another 5 years, then to 800 in another 5 years. The best model is:
Quadratic
Decay
Exponential growth
Linear with constant slope
Explanation
Population doubles every 5 years — a constant multiplicative growth rate, which is exponential.
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