Please help me I'm trying to get this done and can you please explain it!

Two lines that do not intersect are skew. always sometimes or never

While scuba diving, rajeev dove to a depth of 12.6 feet below the surface of the water and then descended another 8.7 feet. what expression can be used to find rajeev's new position? 12.6 – 8.7 –12.6 – 8.7 –12.6 – (–8.7) 12.6 – (–8.7)

Xto the second power plus 14x plus 48. what are the factors? we are doing factoring trinomials with a=1