Mr. Salamon is running for an elected position in the township where he lives. He wants to survey people over the phone regarding whether or not they will vote for him. Which of the following would be the best and most practical sample of the population for him to survey?

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step-by-step explanation:

9-15%

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