6x + 5 = 47 X = 7. Express in Scientific Notation.

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Presentation transcript:

6x + 5 = 47 X = 7

Express in Scientific Notation

9x x +8 = 9 + 7x + 5x + 1 All Real Numbers

10x + 9 = 3x + 9x - 31 x = 20

7.1

Not Real

Rational or Irrational.4576… RR IR R R

Write an equation and solve Cell phone company “A” charges a $120 set up fee and $.20 per minute. Cell phone company “B” charges a $70 set up fee and $.25 per minute. How many minutes would it take for both companies to have the same price?.20x =.25x Minutes

X = 12

5x – 9 = 2x x No Solution

Find the two Square Roots 7 or or -15 Not Real

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