Answer:
130 minutes
Step-by-step explanation:
They watched 50% of movie, means 50% left unwatched
Remaining length = 65 minutes = 50% of movie
Movie length = 65 *2 = 130 minutes
-2x^2+5x+12
(4-x)(3+2x)
12-3x+8x-2x^2
12+5x-2x^2
straight line add up to 180 so subtract 42 from 180 thts ur answer