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5-9.

Function Machine: Input, unknown, rule, A, of, x, = 3 raised to the, x, power, output, unknown.Antonio’s function machine is shown at right.

  1. What is ?

  2. If came out, what was dropped in?

    Since and , how many threes will you multiply to make ?

  3. If came out, what was dropped in? Be accurate to two decimal places.

    See part (b).

    Guess and check the answer.
    What is the answer close to?
    Later you will learn how to solve an equation like this.