-2(a-7)-3a>-31 help pls

Im literally having a mental breakdown

Which number produces an irrational number multiplied by 1/3

Anew movie is released each year for 14 years to go along with a popular book series. each movie is 2 minutes longer than the last to go along with a plot twist. the first movie is 70 minutes long. use an arithmetic series formula to determine the total length of all 14 movies