Laying used 3/8 cup of flour and 1/3 cup of sugar in a recipe which number below is a common denominator for 3/8 and 1/3

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

I’m confused on how to work the pie charts

The perimeter of a quarter circle is 14.28 miles. what is the quarter circle's radius?