Answer:
A,B,
Step-by-step explanation:
A function cannot have the same x values but can have the same y values.
Is D supposed to be (-1,7) by the way? If it is the answer will be A,B,D.
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Ok so i only did 9-18
the circles are the questions and the answers are boxed in, sorry if they are not right i tried my best to help u out
25*8.14=?
Multiply the cost of the book per person ($8.14) by the number of people (25).
Answer : Option D is correct i.e [2.5,4]
Explanation :
Suppose our function is f(x)
then the value of f(x) is minimum where
it reaches -0.44 and 3 with two different intervals .
As we know that for finding the local minimum ,
the criteria is that f'(x)=0 .
So, here
f'(-0.44)=0 and
f'(3)=0
both are the local minimum point for the function f(x)
but -0.44 is the global minimum point .
In our case for [2.5,4] is the required interval where f(x) reaches its local minimum.
