Which algebraic representation shows a reduction?
(x, y) → (-3x, y)
(x, y) → (x - 3, y - 3)
(x, y) → (-3x, -3y)
(x, y) → (12 x, 12 y)

56.6

step-by-step explanation:

the ratio of the perimeters is equal to the scale.

the ratio of the areas is equal to the square of the scale.

34 / 20 = k

a / 19.6 = k²

substituting:

a / 19.6 = (34 / 20)²

a = 19.6 (34 / 20)²

a ≈ 56.6

i hope this is what you were looking for.

see attached graph