The range of the function f(x) = x+5 is {7,9}. what is the function's domain?A. {2,4}
B.{-2,-4}
C.{12,14}
D.{-12,-14}
E.{0,5}

Answer:

Option A is correct

{2, 4} is, the function's domain.

Step-by-step explanation:

Domain is the set of all values of x for which function f(x) is defined.

Range is the set of all complete value of f.

Given the function:

The range of the function is {7, 9}

When f(x) = 7

then;

Subtract 5 from both sides we have;

x = 2

When f(x) = 9

then;

Subtract 5 from both sides we have;

x = 4

⇒Domain = {2, 4}

Therefore, the function's domain is, {2, 4}