SOLUTION: Arnel and Liza are playing a number guessing game. Arnel asks Tina to think of a positive number, double the number, square the result subtract 10, then add 8. If Tina’s answer

Question 1196894: Arnel and Liza are playing a number guessing game. Arnel asks Tina to think of a positive number, double the number, square the result subtract 10, then add 8. If Tina’s answer is 254, what was then the original number? Use the concept of inverse function in your solution.
Answer by ikleyn(52872) (Show Source): You can put this solution on YOUR website!
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Arnel and Liza are playing a number guessing game.
Arnel asks Tina to think of a positive number, double the number, square the result subtract 10, then add 8.
If Tina’s answer is 254, what was then the original number? Use the concept of inverse function in your solution.
~~~~~~~~~~~~~~~

Use the inverse operations in the inverse order.


Consider it as a necessary exercise and complete the solution step by step on your own.


The ANSWER is   = 8.

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