Anew movie is released each year for 12 years to go along with a popular book series. each movie is 3 minutes longer than the last to go along with a plot twist. the first movie is 65 minutes long. use an arithmetic series formula to determine the total length of all 12 movies. 244.5 minutes

Step-by-step explanation:

Arithmetic sequences have the following form

Where

is the first term of the series

d is the common difference between consecutive terms.

is the nth term.

The formula to find the sum Sn of the first n terms of an arithmetic series is:

In this case , ,

Then:

You can also find the sum through the following series

y/x=18

step-by-step explanation:

4x and 6y

im not sure though