John baked 12 cakes, 50 muffins, and 42 pastries on Friday. His goal for Saturday is to bake 3 times as many of each item. If represents his production for Friday, which matrix represents his production for Saturday?

Answer:X_sat   = [tex]\left[\begin{array}{ccc}36\\150\\126\end{array}\right][/tex]Step-by-step explanation:Let,x = number of cakes producedy = number of muffins producedz = number of pastries producedFridayx = 12y = 50z = 42X =productionX_friday = [tex]\left[\begin{array}{ccc}x\\y\\z\end{array}\right][/tex] = [tex]\left[\begin{array}{ccc}12\\50\\42\end{array}\right][/tex]His goal for Saturday is to bake 3 times as many of each itemX_sat = 3*X_friday X_sat  = 3* [tex]\left[\begin{array}{ccc}x\\y\\z\end{array}\right][/tex] X_sat   = [tex]\left[\begin{array}{ccc}36\\150\\126\end{array}\right][/tex]