Can someone me with this on the number 8 question

Negative 5 1/12 + negative 4 1/4 + 6 3/4

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

Find an equation of the line that has intercepts (1,0) and (0,4).