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Home > CCA2 > Chapter 5 > Lesson 5.2.5 > Problem 5-117


Gary has his function and Amy has her function .

  1. Each person is going to choose a whole number at random from the numbers , and substitute it into his or her respective function. After they do this, what is the probability that ?

    Notice that and are equivalent functions, what is the probability that Gary and Amy pick the same number?

    Assume Gary has chosen a number. How many chances does Amy have to pick the same number?
    Out of how many choices?

  2. Find and simplify an expression for .

    Remember the exponent rules.