Answer:
a=216
Step-by-step explanation:
Answer:
option D is true.
Step-by-step explanation:
Given the sequence
7, 12, 17, 22, ...
An arithmetic sequence has a constant difference 'd' and is defined by

Computing the differences of all the adjacent terms

The difference between all the adjacent terms is the same
so

as

Thus, the nth term of the arithmetic sequence will be:


Therefore, option D is true.
I think that the answer could be D
Answer: 273 days i believe
Step-by-step explanation:
jan: 31 days
feb: 28 Days
mar: 31
apr: 30
may: 31
june: 30
july: 31
aug: 31
sept: 30
add all the days together to get 273