Which lines or segments are parallel based off markings?

An advertising firm has an old computer that can prepare a whole mailing in 6 hours. with the of newer model the job is complete in 2 hours. how long would it take the newer model to do the job alone?

Identify an equation in point slope form for the line perpendicular to y=3x+5 that passes through (4,-1)

What is the interquartile range of this data set? 2, 5, 9, 11, 18, 30, 42, 48, 55, 73, 81