Given

\(\Rightarrow f(x)=-2^{x+1}+3\)

parent fucntion is

\(\Rightarrow y=2^x\)

rule for the transformation from the parent function are

\(\Rightarrow\) reflection over x-axis

\(\Rightarrow\) shift of 1 unit left

\(\Rightarrow\) shift of 3 units up