Answer:
It has one solution.
Step-by-step explanation:
(9 + 1) + (9 + 2) =
21 dollars
x = 12
Given
p(x) = x - 3
To find the zero let p(x) = 0, that is
x - 3 = 0 ( add 3 to both sides )
x = 3 ( multiply both sides by 4 )
x = 12 ← zero of p(x)