Question

h(x)=x^3+2x+5

the domain is (-inf,inf), but what is the range?

Answer 1

Well, do you see anything that would say keep it from being negative?

Answer 2

so the range is the same as the domain?

Answer 3

"odd" polynomial functions always have range (-inf, inf). Odd meaning, if the highest power is 1, 3, 5, 7 etc.

Answer 4

Yep. It has no restrictions because it is a simple poly with an odd power in the highest degree term.