🚀 Growth Spurt

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Exponential growth and decay, in the real world. Work out the amount after a doubling, tripling, or half-life. 10 rounds — every answer is a whole number.

Repeated growth/decay is exponential: amount = start × (factor)^{(time ÷ period)}. Doubling uses a factor of 2; a half-life uses ½. Learn it in MCR3U → Exponential Functions.