Answer:
The explicit formula

The recursive formula
for 
if 
Step-by-step explanation:
If a sequence is arithmetical then the difference between any of its consecutive terms will be constant
3, 3.25, 3.5, 3.75,

The difference between the consecutive terms remains constant so the sequence is arithmetic.
The explicit formula for an arithmetic sequence is:

Where d is the constant difference between the terms.

is the first term of the sequence.

So

Finally, the recursive formula is:

Answer:
(x-1) ^2 + (y+4)^2 = 4
Step-by-step explanation:
The equation of a circle can be written as
(x-h) ^2 + (y-k)^2 = r^2 where (h,k) is the center and r is the radius
(x-1) ^2 + (y- -4)^2 = 2^2
(x-1) ^2 + (y+4)^2 = 4
I think 42? I'm not completely sure but that's my guess :)
Answer:
You have to move 6 times to the left and 6 times down.
Step-by-step explanation:
If you're at (2,0), you move 2 times to the left, and then you're at (0,0).
Next move 4 times to the left. Now you're at (-4,0).
Now, move 6 times down, and now, you're at (-4,-6).