I don't understand the question
a- b-4 because you switch the places when it says fewer than, or less than
b-12f
c-s+8
Since a whole recipe asks for 4 1/2 pounds of chicken, then for a 1/2 recipe, you divide 4 1/2 by 2.
It’s easier to turn 4 1/2 to 4.50
4.50/2 = 2.25 or 2 1/4
You need 2 1/4 pounds of chicken for 1/2 of a recipe.
Absolute zero is shown as 0 on the Kelvin Scale.