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Challenge 45: Three Squares
Figure This!
Sunfire!
Helix can usually stay in the sun 8 minutes before being sunburned. Using a sun tan lotion product with SPF (Sun Protection Factor) 10 means that he can stay in the sun 8x10, or 80 minutes before
being burned. Helix put SPF 10 lotion on five
minutes after he got to the beach. An hour later, he is burned. Why?
Need A Hint?
Citizens need to understand what numbers represent in situations in their daily lives. Understanding such numerical values as SPF, the category of a hurricane, and eleictrical wiring codes is important for making informed choics.

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