Grant 2

course mth 158

If your solution to stated problem does not match the given solution, you should self-critique per instructions at http://vhcc2.vhcc.edu/dsmith/geninfo/labrynth_created_fall_05/levl1_22/levl2_81/file3_259.htm.Your solution, attempt at solution:

If you are unable to attempt a solution, give a phrase-by-phrase interpretation of the problem along with a statement of what you do or do not understand about it. This response should be given, based on the work you did in completing the assignment, before you look at the given solution.

002. `* 2

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Question:

* R.2.46 (was R.2.36) Evaluate for x = -2, and y = 3 the expression (2x - 3) / y and explain how you got your result.

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Your solution:

Insert x and y into the equation: [2(-2)-3]/3

Multiply 2 and -2: (-4-3)/3

Subtract -4 and 3: (-7)/3

Divide: -2 1/3

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Question:

* R.2. 55 (was R.2.45) Evaluate for x = 3 and y = -2: | |4x| - |5y| | and explain how you got your result.

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Your solution:

First insert the x and y: ||4(3)|-|5(-2)||

Then multiply: ||12|-|-10||

Then subtract: |2|=2

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Question:

* R.2.64 (was R.2.54) Explain what values, if any, cannot be present in the domain of the expression (-9x^2 - x + 1) / (x^3 + x)

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Your solution:

x=0

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Question:

* R.2.76 \ 73 (was R.4.6). What is -4^-2 and how did you use the laws of exponents to get your result?

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Your solution:

.0625

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Question:

* R.2.94. Express [ 5 x^-2 / (6 y^-2) ] ^ -3 with only positive exponents and explain how you used the laws of exponents to get your result.

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Your solution:



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Question:

* R.2.90 (was R.4.36). Express (x^-2 y) / (x y^2) with only positive exponents and explain how you used the laws of exponents to get your result.

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Your solution:



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Question:

* R.2.122 (was R.4.72). Express 0.00421 in scientific notation.

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Your solution:



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Question:

* R.2.128 (was R.4.78). Express 9.7 * 10^3 in decimal notation.

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Your solution:

.0097

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Question:

* R.2.152 \ 150 (was R.2.78) If an unhealthy temperature is one for which | T - 98.6 | > 1.5, then how do you show that T = 97 and T = 100 are unhealthy?

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Your solution:

|97-98.6|= | -1.6|=1.6 and 1.6>1.5

|100-98.6|=|1.4|= 1.4 and 1.4>1.5 is not true

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You don't appear to have answered all the questions.

You appear to be deleting much of the information in the file.

You should be submitting the entire file, with your responses, self-critiques, etc., inserted as appropriate.