I believe the answer is 2783 for 1 a - either
Answer:
After reflection over the x-axis, we have the coordinates as follows;
A’ (5,-2)
B’ ( 1,-2)
C’ (3,-6)
Step-by-step explanation:
Here, we want to find the coordinates A’ B’ and C’ after a reflection over the x-axis
By reflecting over the x-axis, the y-coordinate is bound to change in sign
So if we have a Point (x,y) and we reflect over the x-axis, the image of the point after reflection would turn to (x,-y)
We simply go on to negate the value of the y-coordinate
Mathematically if we apply these to the given points, what we get are the following;
A’ (5,-2)
B’ ( 1,-2)
C’ (3,-6)
No it is not. The factors of 81 are 1,3,9,27...
Consider the substitution,
so that the integral is equivalent to
Notice that
which means 
is odd, so
Perhaps more work than necessary, but it does make it easier to see that the original integrand exhibits some symmetry about 
.
Answer:
You can say x to the power of 2 or you can say x squared.
Hope that answers your question!
