Math Forum - Problem of the Week


TI-PoW: Chirp! Chirp!

I read once that you can figure out what the temperature is in degrees F (Fahrenheit) by counting the number of chirps that a cricket makes in 15 seconds. I couldn't remember the formula, but I did find some data.

crickets
cricket
chirps in 15 seconds temperature in F
25 65
32 72
cricket
crickets

Use your TI-Nspire™ to help you answer these questions:

  1. What's the temperature when a cricket is chirping 164 times a minute?
  2. Write a formula that could be used to predict the temperature given the number of chirps per 15 seconds. Note: Use "c" for chirps and "t" for temperature.

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