Question

Which is a cubic function?

f(x) = 3x + 1
f(x) = 3x2 + x + 2
f(x) = 5x3 + 2x + 1
f(x) = x3 + x4 + 5

Answer 1

Answer:

$f(x) = 5x {}^{3}+ 2x + 1 \: is \: a \: cubic \: funtion.$

Answer 2

Answer:

C.  f(x)=5x3 + 2x + 1

Step-by-step explanation: