First observe that if ,
Let and
. It follows that
Now let , so
. Solving for
,
which means
Now solve for .
(note that we assume )
(we omit since
is not true)
Jeff is shopping for a new T-shirt at a clothing store. The graph shows the total price for the shirts depending on how many T-s
hirts Jeff buys. What is the price of seven T-shirts? $56 $60 $63 $69. FAST PLEASE (:
2 answers:
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Answer:
-1
Step-by-step explanation:
Given,
f(x) = -x² + 4x - 1 and x = 0
Putting the value of x we get,
f(0)= + (4 X 0) - 1
= -0+0-1
=-1
∴f(x)= -1
So, the required value is -1