Eugene had some paper with which to make cards. On his way to his room he found three more pieces to use. In his room he cut each piece of paper in half. When he was done he had 12 half-pieces paper. With how many pieces of paper did he start?

answer: -10

step-by-step explanation:

s(t) = 1 - 10t

s(x) = 1 - 10x

s(x + h) = 1 - 10(x + h)

            = 1 - 10x - 10h

s(x + h) - s(x) = 1 - 10x - 10h - (1 - 10x)

                      = 1 - 10x - 10h - 1 + 10x

                      = -10h

= -10

i think its a.

hope this