I need help with geometry it’s urgent. I will fail class if I don’t pass this test.

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?

Twelve less than a number is at most 20

What is the equation of the line that is parallel to the line with the equation y= -3/4x +1 and passes through the point (12,-12)