Help your poor girl out please. Thank you <3

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

You paid 28.00 for 8 gallons of gasoline. how much would you pay for 15 gallons of gasoline?

Evaluate cos2θ for cosθ = square root of 3/2