In any sequence of n nonzero numbers, a pair of consecutive terms with opposite signs represents a sign change. for example, the sequence –2, 3, –4, 5 has three sign changes. does the sequence of nonzero numbers s1, s2, s3, … , sn have an even number of sign changes?

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Consider the following estimates from the early 2010s of shares of income to each group. country poorest 40% next 30% richest 30% bolivia 10 25 65 chile 10 20 70 uruguay 20 30 50 1.) using the 4-point curved line drawing tool, plot the lorenz curve for bolivia. properly label your curve. 2.) using the 4-point curved line drawing tool, plot the lorenz curve for uruguay. properly label your curve.

80 points suppose marcy made 45 posts online. if 23 of them contained an image, what percent of her posts had images? round your answer to the nearest whole percent. 54 percent 51 percent 49 percent 48 percent