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A-56.

Calculate the following values.

  1. If , what is the value of when ?

    Substitute −6 in for x.
    y = 2 + 4.3( −6 )

    Multiply and simplify.

    y = 2 + (−25.8)

    y = −23.8

  2. If , what is the value of ?

    Follow the steps in part (a).

    Remember to use the correct order of operations.

  3. If , what is the value of when ?

    Begin by substituting for in the equation.

  4. If , what is the value of when ?

    Rewrite the equation as .