Algebra II help

[XSurferXe]

im perplexed by this question...we were never teached domain and range... so please help in an easy way with this question : "Suppose the function f(x) = 4x + 3 is defined for x > -2. "

A. Find f(-1) .... i got -1

B. Find the domain and range of F ........ here I am lost PLEASE help

[Leong]

Domain is the the set value x for f(x) to be defined.in this case, it is given as x \geq\ -2.
Range is the set of value of f(x) for the domain. f(-2)=-5. so, the range is f(x)\geq \ -5