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Sagot :
[tex](1)\\the\ domain:\ \ D=\{1;\ 2;\ 3;\ 4\}\ \ \ \ Ans.\ A.\\\\ (2)\ \ \ ? \ (empty)\\\\(3)\\the\ range:\ \ \ Y=\{{1;\ 2;\ 3;\ 4\}\ \ \ \ Ans.\ B. [/tex]
[tex](4)\\ \frac{p}{d} =const\\\\ \frac{3}{5} = \frac{12}{d} \ \ \ \Leftrightarrow\ \ \ 3d=5\cdot12\ \ \ \Leftrightarrow\ \ \ d= \frac{5\cdot3\cdot4}{3} =20\ \ \ \Rightarrow\ \ \ Ans.\ B.\\\\(5)\\T(z)=z-8\ \ \ \Rightarrow\ \ \ T(-2)=-2-8=-10\ \ \ \Rightarrow\ \ \ Ans.\ A.\\\\(6)\\800\ calories \ \ \rightarrow\ \ 4\ hours\\x\ \ \ \rightarrow\ \ 1\ hour\\\\x= \frac{800}{4} \ calories\ \ \ \Rightarrow\ \ \ x=200\ calories\\\\C=200\cdot t\ \ \ \Rightarrow\ \ \ Ans.\ C.[/tex]
[tex](4)\\ \frac{p}{d} =const\\\\ \frac{3}{5} = \frac{12}{d} \ \ \ \Leftrightarrow\ \ \ 3d=5\cdot12\ \ \ \Leftrightarrow\ \ \ d= \frac{5\cdot3\cdot4}{3} =20\ \ \ \Rightarrow\ \ \ Ans.\ B.\\\\(5)\\T(z)=z-8\ \ \ \Rightarrow\ \ \ T(-2)=-2-8=-10\ \ \ \Rightarrow\ \ \ Ans.\ A.\\\\(6)\\800\ calories \ \ \rightarrow\ \ 4\ hours\\x\ \ \ \rightarrow\ \ 1\ hour\\\\x= \frac{800}{4} \ calories\ \ \ \Rightarrow\ \ \ x=200\ calories\\\\C=200\cdot t\ \ \ \Rightarrow\ \ \ Ans.\ C.[/tex]
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