Question

The scatter plot below shows the number of DVDs Aaron sold in different months: Plot ordered pairs 1, 20 and 2, 50 and 3, 80 and 4, 110 and 5, 140 What is the approximate predicted number of DVDs Aaron will sell in the 13th month?

Answer 1

The answer is approimately 380.

30x-10 is the line's approximate equation.

30(13)-10

390-10

380

Answer 2

380

Explanation:

This can be represented as a sequence, with the first term being 20 and the common difference being 30. The general form can then be found using

`a_n=20+30(n-1)`

For the 13th term,

`a_(13)=20+30(13-1)\\\\a_(13)=20+30(12)\\\\a_(13)=20+360=380`