Answer:
14 (last option)
Step-by-step explanation:
since, f(x) varies directly with x
f(x) = kx
k is some constant
[tex] \implies \mathsf{k = \frac{f(x)}{x} }[/tex]
[tex] \implies \mathsf{k = \frac{56}{8} }[/tex]
[tex] \implies \boxed{\mathsf{k = 7 }}[/tex]
f(x) = kx
f(x) = 7 × 2
=> f(x) = 14
