Use Polya's four-step problem-solving strategy and the problem-solving procedures presented in this section to solve the following exercise. A frog is at the bottom of a 13-foot well. Each time the frog leaps, it moves up 3 feet. If the frog has not reached the top of the well, then the frog slides back 1 foot before it is ready to make another leap. How many leaps will the frog need to escape the well?

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Chapter8: Sequences, Series,and Probability
Section8.2: Arithmetic Sequences And Partial Sums
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Use Polya's four-step problem-solving strategy and the problem-solving procedures presented in this section to solve the following exercise.
A frog is at the bottom of a 13-foot well. Each time the frog leaps, it moves up 3 feet. If the frog has not reached the top of the well, then the frog slides back 1 foot before it is ready to make another leap. How many leaps will the frog need to escape the well?
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