Classify each function into one of the three categories: exponential, linear, or neither
f(x) = -2(8)[Select]
f(3) = 15 - 2 [Select ]
f (x) = { (3) [ Select]
f(x) = 6x2 + 9 [Select]
f (x) = 4(1.6)
[Select]
f(x) = < (18 - x) [Select]
f(x) = V16+20 [Select]

Please help this is TEST