Answer:
A
Step-by-step explanation:
Given f(x) = 14x + 42 and f(x) = 35, then equate right sides, that is
14x + 42 = 35 ( subtract 42 from both sides )
14x = - 7 ( divide both sides by 14 )
x = - [tex]\frac{7}{14}[/tex] = - [tex]\frac{1}{2}[/tex] → A
