Exponential growth and decay
Functions and exponentials · Stage 3
Recognize the pattern
Repeated percent change uses a multiplier raised to time.
Useful ruleP(1±r)^t
Build on: ADM-01
Try it before reading the solution
A quantity starts at 80 and grows 10% each year. Write a model after t years.
This teaching example is original and is not an official SAT question.
Reasoning
The growth multiplier is 1+0.10=1.10.
Answer80(1.10)^t
03 · Next step
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Practice questions remain in English, as on the SAT.