Answer:
Step-by-step explanation:
Answer:

Step-by-step explanation:
is given as the nth term of a sequence.
We want to find
, which means we find the 7th term of the sequence.
Here, we simply substitute "7" into "n" of the formula given for
to find the value of the 7th term of the sequence.
We show this below:

So the 7th term is "-15"
Answer:
r = 21 cm
Step-by-step explanation:
The radius of a circle is 1/2 of the diameter
r = 1/2d
r = 1/2(42)
r = 21 cm
Answer:
The last one
Step-by-step explanation:
If you look at a graph, none of the line should overlap each other vertically. If a graph overlaps anywhere vertically, it is not a function.