F(x)=x; vertical stretch by factor o 2 followed by translation 1 unit up

think of this as a composition of functions.

let h(x)=x−2 be our horizontal translation and g(x)=−x be our reflection

(f∘g)(x)=f(−x) is our function reflected.

(f∘h)(x)=f(x−2) is our function translated.

(f∘g∘h)(x) is our function first translated then reflected.

(g∘h)(x)=−(x−2)=2−x(f∘g∘h)(x)=f(2−x)

(f∘h∘g)(x) is our function first reflected then translated.

(h∘g)(x)=g(x)−2=−x−2(f∘g∘h)(x)=f(−x−2)

-2 is the right