I need some help with the homework problem. I have a list of formulas, but can't seem to get it done.

I started by taking the constant out and setting u =
After this I can't seem to progress.

If the slope of one line equals the slope of another line then ? a) the two lines are intersecting lines b) the two lines are perpendicular lines c) the two lines are parallel lines d) the two lines always have very steep slopes

What could explain what happened when the time was equal to 120 minutes

Evaluate the expression for the given value of the variable. | ? 4 b ? 8 | + ? ? ? 1 ? b 2 ? ? + 2 b 3 -4b-8+-1-b2+2b3 ; b = ? 2 b=-2