add three numbers to the following data set so that the mean and the median of the set increase to 42. the numbers in the data set are 25, 29, 31, 32, 33, 34, 35, 36, 37, 39, 39, 40, 41, 41, 41, 41 42, 43, 43, 45, 45, 46, 46, 46, 47, 47, 48, 49, 49, 50.

p

step-by-step explanation:

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