If you buy 17 books and they cost $15 and you buy 12 magazines and they cost four dollars how much did you spend
1 answer:
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Given:
The graph of a function.
To find:
The function.
Solution:
From the given graph, it is clear that the graph intersect the x-axis at x=-4, -2, 1. It means -4, -2 and 1 are zeros of the given function graph.
If c is a zero of a function f(x), then (x-c) is a factor of f(x).
Using the above definition, we conclude that (x+4), (x+2) and (x-1) are the factors of given function. So,
Therefore, the correct option is A.
Standard error (SE)
Or
Therefore, SE of the mean = (8)/(2) =4
Or
Therefore, SE of the mean = (8)/(2) =4