What is the 30th term of the arithmetic sequence?
15, 11, 7, 3, -
a.) 131
b.) -5
c.) -101
d.) -105

C.

Step-by-step explanation:

We have the arithmetic sequence 15,11,7,3,-1,...

Where,

You can see that the common difference d=(-4), or if you couldn't see the common difference you can calculate it with the formula:

Then,

Now to find the 30th term of the arithmetic sequence we can use the following formula:

Replacing n=30, and d=(-4):

Then the correct option is C.

x is variable or an unknown value to find

example:

2x = 5 which means x = 3

the central idea is that:

individuals should refuse to cooperate with institutions they believe unjust.

thoreau felt  that governments were more often agents of corruption than justice, even democracies, and that just because the majority feels a certain way does not make it just or correct in absolute terms. he uses the fact that slavery exists in our democracy to support this idea.

he goes on to say that, as a result, people should live true to their own internal laws regarding right and wrong, as a product of reflection and a moral life, rather than following every law that society imposes. 

step-by-step explanation: