Help What’s the slope of the line

Proceed as in example 3 in section 6.1 to rewrite the given expression using a single power series whose general term involves xk. ∞ n(n − 1)cnxn − 2 n = 2 − 4 ∞ ncnxn n = 1 + ∞ cnxn n = 0

Find an equation of the line perpendicular to the graph of 28x-7y=9 that passes through the point at (4,1)

Create a data set with 8 points in it that has a mean of approximately 10 and a standard deviation of approximately 1.