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Home > A2C > Chapter 3 > Lesson 3.2.2 > Problem 3-115


If , find the value of the expressions in parts (a) through (c) below. Then complete parts (d) through (f). 7-99 HW eTool (Desmos)   Homework Help ✎

  1. Substitute for and simplify.

  1. Refer to part (a).

  1. Refer to part (a).

  1. What value of gives ?

    Substitute for  and solve for .

  2. Where does the graph of this function cross the -axis? The -axis?

    A function crosses the -axis at , and a function crosses the -axis at .

  3. If , find .

Use the eTool below to find the value of each expression in parts (a) through (c).
Click on the link at right for the full eTool version: CCA 7-99 HW eTool