Yes they are all quadratic functions
Answer:
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Answer:
Option B
Step-by-step explanation:
we know that
The critical point of a function are the points on the graph of a function where the derivative is zero or the derivative does not exist.
we have
step 1
Take the derivative of the function
step 2
Set that derivative equal to 0 and solve for x. Each x value you find is known as a critical number
<em>Alternative Method</em>
The critical point of the quadratic equation is the vertex, because the function changes from decreasing to increasing at that point (In this problem the vertex is a minimum)
we have
Convert into vertex form
the vertex is the point (-2,-15)
therefore
The x-coordinate of the critical point is x=-2
Idk if this is what you’re looking for but here you go
20/ X= 100
⇒ X= 20/100 (inverse operation)
⇒ X= 1/5
Final answer: X= 1/5