21. A candle is 17 in. tall after burning for 3 hours. After 5 hours, it is 15 in. tall. Write a linear equation to model the relationship between height h of the candle and time t. Predict how tall the candle will be after burning 8 hours. (2 points)

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2. in 2 hours it burned 2 inches.
It must have started at 20" tall.

h(t) = 20-t
h(8) = 12

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3. 30

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