A triangular pyramid has lateral faces with bases of 6 meters and heights of 9 meters. The area of the base of the pyramid is 15
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ANSWER and EXPLANATION
We want to order the functions from widest to narrowest:
To do this, we have to plot the graphs of the functions by using a table of values.
Let us find the values of the functions for values of x = -2, 0, 2
For the first function:
Hence, its table is:
For the second function:
Hence, its table is:
For the third function:
Hence, its table is:
Now, let us plot the graphs of the functions:
Therefore, from the graph, we see that the order of the functions from widest to narrowest is:
The domain of a(x) is all of R. The domain of b is the range where 
. We can calculate the composition boa by changing in the expression for b, every x with a(x). Hence, boa(x)=
=
. Again for a function with a root to be defined, we need that the expression under the square root has to be positive. Hence, 3x-3
0.Thus, the set where this holds is 
. This is also the domain of the function boa(x).