Pared linear function. given non-overlapping intervals on the real number line, a freol) piecewise in
s a function from the union of the intervals on the real number line that is defined by possibly differer
functions on each interval

faster, im not sure why but i know it is faster

12r - 8 - 12

you have to combine like terms. below i have bolded the like terms:

12r - 8 - 12

together it combines to:

12r - 20

hope this !

time is equal to distance over rate so

t = d/r

need a little bit more information for the second question.