Write the first four terms of each sequence. (1) f(1)=7, f(n)=f(n-1)+15 (2) f(1)=2, f(n) =f(n-1) -7 (3) f(1)=30, f(n) =2•f(n-1) -50

Triangle xyz, with vertices x(-2, 0), y(-2, -1), and z(-5, -2), undergoes a transformation to form triangle x? y? z? , with vertices x? (4, -2), y? (4, -3), and z? (1, -4). the type of transformation that triangle xyz undergoes is a . triangle x? y? z? then undergoes a transformation to form triangle x? y? z? , with vertices x? (4, 2), y? (4, 3), and z? (1, 4). the type of transformation that triangle x? y? z? undergoes is a .