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Quadratic Formula

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by

Cam Brundage

on 29 January 2016

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Transcript of Quadratic Formula

Quadratic Formula is...
find the solutions to the
quadratic equation, using
the quadratic formula.....
2x - 8x + 3 = 0
2
3x + 5x - 2 = 0
2
-AND-
0.42 and 3.58
-2 and 0.33
-AND-
Answers:
x + 6x = 10
2
(x + 9) = 64
2
10x - 4 = 6x + 5
2
2
answers:
-7.36 and 1.36
-1.5 and 1.5
-17 and -1
For the period 1990–2002,
the amount of money y (in billions of dollars)
spent in the United States on books and maps can be modeled by the function
where x is the number of years since 1990.
y = 0.0178x + 1.5x + 16
a. Find the amount of money spent in the year 1993

b. Find the year in which 20 billion dollars were spent on books and maps.

c. Find the year in which 32 billion dollars were spent on books and maps.
answers:
a.
b.
c.
between 1992 and 1993
between 1999 and 2000
2
$20.66 (Billion)
HOW ABOUT THESE?
get them into
standard form,
then solve using
quadratic formula
Full transcript