The following is a list of 13 measurements. 16, −31, 49, −70, −41, 75, 98, 4, −59, 11, −49, −5, −52

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Suppose that these 13 measurements are respectively labeled x1, x2, ..., x13. (Thus, 16 is labeled x1, −31 is labeled x2, and so on.) Compute the following.
Σ=i1134xi

The household makes $424.45

At a constant it will take one hour to travel 32 mi.at that speed it will take 1/2 hr to travel the remaining 16 mi.it will take 1+1/2 hr to travel the 48mi @ 32mph.so 1 hr = 60 min& 1/2 hr = 30 min1+1/2 hr = 90 min.there are 60s in each 90 × 60 = 3600 seconds.the real question seriously is he why are they driving so slow? ! lol.