The number of DVDs in a random person’s home collection is counted for a sample population of 80 people. The mean of the sample
is 52 movies; the entire population is known to have a standard deviation of 12 movies. Assuming a 99% confidence level, find the margin of error.
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Begin by grouping the first two terms together and the last two together, then factor and redistribute
(4x^3+x^2)+(-8x-2)
(x^2)(4x+1)+(-2)(4x+1)
x^2(4x+1)-2(4x+1)
the answer is the first one
A) The first because it features a valency of +1.
b) The seventh because it has a valency of -1.
c) The third as it contains a valency of +3.
