5x + 7 = 47 X = 8. d = ac - 20 Express in Scientific Notation.

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Presentation transcript:

5x + 7 = 47 X = 8

d = ac - 20

Express in Scientific Notation

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

8x + 8 = 3x + 2x - 31 x = -13

5.7

-5

Rational or Irrational … RR IRR R

Write an equation and solve Tom went to the store he spent a total of $ He bought 3 books that all cost the same amount. He also spent $9.00 on a CD. How much was watch book? 3x + 9 = 30 Each book was $7.00

a = b(d – c)

X = -2

5x – 9 = 2x x No Solution

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