Why should people select credit counselors and debt management companies carefully?

Because you are basically letting someone else "manage your money" so to speak, choosing the wrong person could just lead to more debt or worse credit.

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

3x + 4y -25 =0 represents the amount of change sianna should recieve