Answer:
x = 4
Step-by-step explanation:
given f(x) = 11 then equate f(x) = 11 and solve for x
4x - 5 = 11 ( add 5 to both sides )
4x = 16 ( divide both sides by 4 )
x = 4 ← value of x in the domain
9x² - 6x
7/12
7+5=12
12-5=7