Answer:
a) Suppose that F is ordered in ascending order:
. Then, the complement of F can be written as

which is the union of a finite number of open intervals, then
is an open set. Thus, F is a closed subset of the real numbers.
b) Take an arbitrary element of F, let us say
. Now, choose a real number
such that
there are not other element of F, because
is less that the minimum distance between
and its neighbors.
In case that
we only consider
, and if
we only consider
.
Then, all points of F are isolated.
Step-by-step explanation:
Answer:
See attachment for graph
Step-by-step explanation:
Given

Required
The graph that shows the number of miles in x hours
We have:

Multiply both sides by x


So, the function is:

Yea I also don’t see a graph sorry
All of these have no x-intercepts, since x-intercepts require y to be 0. Their y-intercepts are:
(0, 4)
(0, -18)
(0, 16)
(0, -7)
respectively.