Answer:

Step-by-step explanation:
1) To find the 4th term given the Explicit Formula, i.e. definition, just plug it in. The common difference according to question is 4, the 1st term is 3.

2) For this another Sequence in Explicit definition we just need to plug it in:

Answer:You can use a negative space \! to remove (or reduce) this to your liking. It would be best to define a command for this, for the sake of consistency
Step-by-step explanation:
The answer to the question is
F-1(x)=1/2x-3/2
Answer:
perpendicular
Step-by-step explanation:
because the opp of 3 is 
<3
Red