Answer:
The middle one because there is only 1 value of y for every value of x.
Answer:
B
Step-by-step explanation:
When x = 1, it appears y is in between 1 and 2.
The only choice that satisfies this is B.
Answer: -24
Step-by-step explanation:
Answer:
60% i got it
Step-by-step explanation:
6000/500= 12
12/20*100= 60%
A differentiable function 
is increasing on an open interval 
if 
for all 
, and decreasing if 
. For this problem, you then need to compute the derivative:
then solve for 
:
We can ignore 
because 
is defined only for 
. So we have two intervals to consider, 
and 
. All we need to do is pick any value from either interval and check the sign of the derivative 
. Since 
, from the first interval we can take 
, and from the second we can pick 
.
The above indicates that is decreasing on the first interval , and increasing on the second interval .
For part (b), we use the info from above as part of the first derivative test for extrema. We have one critical point at 
, and we know how behaves to either side of this point; decreases to left of it, and increases to the right. This pattern is indicative of a minimum occurring at , and we find that has the (local) minimum value of 
.
