A. coefficient is the answer
A. <span>isolating the x² term and finding the square root of both sides </span>
A(x) = 3x + 1
b(x) = √(x-4)
Therefore

This composition of functions is only defined as a real number when x≥0.
Therefore its domain is x = [1,∞]
Answer: [1,∞]
The ratio is 4:5
Divide both terms by 4
16/4 =4
20/4=5