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- danny
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**MAT 222 WEEK 3 COMPLETE ASH**

**Week 3 Assignment Real World Radical Formulas**.

Read the following instructions in order to complete this assignment:

a. Solve parts *a *and *b *of problem 103 on page 605 and problem 104 on page 606 of *Elementary and Intermediate Algebra*.

b. Write a two to three page paper that is formatted in APA style and according to the Math Writing Guide. Format your math work as shown in the example and be concise in your reasoning. In the body of your essay, please make sure to include:

§ An explanation of what the parts of the formula mean before using it to get your answers. Study the Instructor Guidance examples to learn how to solve the formula for another variable.

§ Your solution to the above problems, making sure to include all mathematical work.

§ A discussion of how and why these concepts are important in the “real world.” Describe another situation that could be evaluated using these concepts.

**Week 3 DQ Simplifying Radicals**.

In this discussion, you will simplify and compare equivalent expressions written both in radical form and with rational (fractional) exponents. Read the following instructions in order and view the example to complete this discussion:

a. Find the rational exponent problems assigned to you in the table below.

*If the last letter of your first name is*

*On pages 576 – 577, do the following problems*

A or L

42 and 101

B or K

96 and 60

C or J

46 and 104

D or I

94 and 62

E or H

52 and 102

F or G

90 and 64

M or Z

38 and 72

N or Y

78 and 70

O or X

44 and 74

P or W

80 and 68

Q or V

50 and 76

R or U

84 and 66

S or T

54 and 100

b. Simplify each expression using the rules of exponents and examine the steps you are taking.

c. Incorporate the following five math vocabulary words into your discussion. Use **bold **font to emphasize the words in your writing (**Do not write definitions for the words; use them appropriately in sentences describing the thought behind your math work**.):

§ Principal root

§ Product rule

§ Quotient rule

§ Reciprocal

§ *n*th root

Refer to Inserting Math Symbols for guidance with formatting. Be aware that with regards to the square root symbol, you will notice that it only shows the front part of a radical and not the top bar. Thus, it is impossible to tell how much of an expression is included in the radical itself unless you use parenthesis. For example, if we have √12 + 9 it is not enough for us to know if the 9 is under the radical with the 12 or not. Thus we must specify whether we mean it to say √(12) + 9 or √(12 + 9). As there is a big difference between the two, this distinction is important in your notation.

Another solution is to type the letters “sqrt” in place of the radical and use parenthesis to indicate how much is included in the radical as described in the second method above. The example above would appear as either “sqrt(12) + 9” or “sqrt(12 + 9)” depending on what we needed it to say.

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- Amanda kelly
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