This is 1 problem, just 2 attachment.
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answer: a.   one is a factor of every whole number since every number is divisible by itself.

step-by-step explanation:

left be aligning the decimal points is required to not required see the number of digits to the right

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