Question

Ann thought of a number N, multiplied it by 5 and added 7. Then she told the result R to Jim.

Find the Domain and Range of this function.

Answer 1

`D=(-\infty,\infty),[N|N\in\mathbb{R}]`

`R=(-\infty,\infty),[R|R\in\mathbb{R}]`

Explanation:

Given : Ann thought of a number N, multiplied it by 5 and added 7. Then she told the result R to Jim.

To find : The Domain and Range of this function.

Solution :

Ann thought of a number N,

Multiplied the number by 5 = 5N

Added 7 = 5N+7

Result is R = 5N+7

The function form is
`R=5N+7`

The Domain is where the function is defined.

The domain of the given function is

`D=(-\infty,\infty),[N|N\in\mathbb{R}]`

The range is the set of value that corresponds to domain.

`R=(-\infty,\infty),[R|R\in\mathbb{R}]`