Answer
4.4 pounds
Work Step by Step
We can find the mass of the sack in kg:
$mg = weight$
$m = \frac{weight}{g}$
$m = \frac{19.8~N}{9.8~m/s^2}$
$m = 2.0~kg$
We can convert the mass to units of pounds.
$(2.0~kg)\times \frac{2.2~pounds}{1~kg} = 4.4~pounds$