The area of D is given by:

The average value of f over D is given by:
Answer: 8x+24
Step-by-step explanation:
Let g be the number of grandchildren, and d be the number of dogs. They both have only one head, so the number of heads is

Grandchildren have 2 legs, while dogs have 4. So, the total number of legs is

From the first equation (the one for the heads) we can derive

Substitute this into the second to get

So, there are 9 dogs and (from the first equation

Answer:
Shift 6 units right.
Step-by-step explanation:
Easiest way to answer this question is to plot the two graphs:
Let's plot these graphs and analyse each graph.
Lets take the graph of
that is attached.
We can clearly see that graph intersects x axis at x=0 and then essentially looks like y=x is mirrored by the y axis.
Now when we look at the
that is attached,
We can see that graph intersects x axis at x=6 and is a composite graph of
and its mirrored graph by y=6.
We can clearly see that graph has moved 6 units to the right.