Let 
denote the <em>k</em>th term of the sequence. Then
where <em>d</em> is the common difference between consecutive terms in the sequence and <em>a</em>₁ is the first term.
The sum of the first <em>n</em> terms is
From the formula for , we get
So we have 
, and 
so that 
.
Then the <em>n</em>th term in the sequence is
Answer:
3x+7
Step-by-step explanation:
Let’s take the number as x
3 times x is 3x
And then 7
3x+7
9 divided by 3 is perfectly 3
Percent change = (new number - old number)/(old number) * 100
If the percent change is positive, it is a percent increase.
If the percent change is negative, it is a percent decrease.
In our case, the number goes from 500000 (the old number) to 60000 (the new number).
percent change = (new number - old number)/(old number) * 100
percent change = (60000 - 500000)/(500000) * 100
percent change = -88%
Answer: the percent decrease is 88%
Are you looking for the slop of the graph
