Answer:
x = 12
Step-by-step explanation:
Given
p(x) = [tex]\frac{1}{4}[/tex] x - 3
To find the zero let p(x) = 0, that is
[tex]\frac{1}{4}[/tex] x - 3 = 0 ( add 3 to both sides )
[tex]\frac{1}{4}[/tex] x = 3 ( multiply both sides by 4 )
x = 12 ← zero of p(x)