express 1 (1 − x)2 as a power series by differentiating the equation below. what is the radius of convergence? 1 1 − x = 1 x x2 x3 = [infinity] xn n = 0 |x| < 1

When rates are expressed as a quantity of 1, such as 2 feet per second or 5 miles per hour, they are called unit rates. if you have a multiple-unit rate such as 120 students for every 3 buses, and want to find the single-unit rate, write a ratio equal to the multiple-unit rate with 1 as the second term.

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