We want to get $h(x)= 0.29\cos(3x+4.2)$
$ y = \cos x$ -> multiply $x$-axis 0,29 -> $y=0.29\cos x$ -> multiply $y$-axis $1/3$ -> $y=0.29\cos(3x)$ -> translation $(-1,4;0)$ -> $h(x) = 0.29\cos(3x+4.2)$
Is this correct? I know you can more easily translate first, however I like to use as a rule of thumb to always multiply before translating.