Khalid purchases flower bulbs from a catalog for $2 each, plus a $4 shipping charge for the entire order. He spends $20 on flowe
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First pick a value of 
close to 
. You should be fine with 
.
The linear approximation of
at 
is given by
where
is some fixed value close to . You have
so
The actual value is closer to -0.9709, so the approximation is decent.
The linear approximation of
where
so
The actual value is closer to -0.9709, so the approximation is decent.
First we need to choose from "Posivite Test" column:
