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Show that: a) W = {(x1, x2, x3) ∈ R^3: x1=x3} is a vector subspace of R^3. b) Do (1,3,1) and (2,5,2) form a basis of W? Explain answer.? Juan scored 82. Usea compound inequality to show the possible score x he got on his second test,if the average is strictly between 74 and 80? Calculus 2 help with volume by cross section? If mx+3=n-x has infinite solution then m.n=? Would anyone be able to dunk on Mars or The Moon no matter how tall they are?