11.6 Quadratic Equations in Action and a Look Ahead
Point 3 of 5
11.6.3 Average Growth Rate Problems
Core idea
When a quantity rises or falls by the same rate twice in a row, the total carries a (1+x)² — the "interest on interest" picture naturally brings out a square.
Module goal. Use quadratic equations to solve real problems about area, growth rates, and more, then carry the "equals" mindset toward the next stage's "not equals."
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