Question

Addison is selling giant chocolate bars for the choir fundraiser. The choir program will earn $3 for every bar that she

sells. She uses the function y = 3x to calculate how much she earns.
Given the domain of {9, 15, 18, 21, 27}, what is the range?
a
b
{3, 5, 6, 7, 93
9 275x581
{27, 45, 54, 63, 81}
С
d

Answer 1

Given:

The function is

`y=3x`

Domain of the function is {9, 15, 18, 21, 27}.

To find:

The range of the function.

Solution:

We have,

`y=3x`

Domain is set of input (x-values) and range is the set of output (y-values).

Domain = {9, 15, 18, 21, 27}

For x=9,

`y=3(9)=27`

For x=15,

`y=3(15)=45`

For x=18,

`y=3(18)=54`

For x=21,

`y=3(21)=63`

For x=27,

`y=3(27)=81`

So, the y-values are 27, 45, 54, 63, 81.

Therefore, the range of the function is {27, 45, 54, 63, 81}.

Note: Options are not in proper form.