4bags / 6kg = 1bag in kilograms
1kilogram=1000 grams
f(x) = 4x - 5
g(x) = 3x + 7
Both of them have no existence conditions, so both has real as they domain
f(x) + g(x) = (4x - 5) + (3x + 7) = 4x + 3x + 7 - 5 = 7x + 2
Since both has real as they domain, f(x) + g(x) will too.
Answer:
D.
Step-by-step explanation:
