Question

f(t)=(3t-9)^(1/3). I get that that domain should be [3,infinity), but I'm being marked incorrect. What did I do wrong?

Answer 1

9^(1/3) ?

Answer 2

=2.0800838....

Answer 3

let me clarify, I forgot to say f(t)=

Answer 4

anyway, there's no domain restriction on this... no value of t causes an infinity, hole or complex value...