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Home > AC > Chapter 2 > Lesson 2.1.3 > Problem 2-30

2-30.

Read the Math Notes box for this lesson. Then evaluate each expression below.

  1. For when , what does equal?

    Rewrite the expression, substituting in the known variable.


  1. For when , what does equal?

    See part (a) for a strategy to evaluate this expression. Remember to pay attention to negative signs.

  1. For when , what does equal?

    Rewrite the expression, substituting in the known variable.



  1. For when , what does equal?

    Refer to parts (a) and (c).

  1. For  when , what does equal?

    Rewrite the problem, substituting in the known variable and then rearrange the problem to make it equal to the unknown variable.