Identify each domain and range for each function plz help me look at the pic^ 1. all multiples of 3
all positive whole numbers
all positive numbers and zero all positive numbers
all real numbers

2. all multiples of 3
all positive whole numbers
all positive numbers and zero all positive numbers
all real numbers

Should we identify the domain also?

option a is correct.

step-by-step explanation:

scale factor: it is used to find proportional measurements.

proportions means having the same ratio.

scale factor is the ratio of the model measurement to the actual measurement in a simplest form.

or we can say that the ratio of any two corresponding lengths in two similar geometric figures

if the scale factor is more than 1, then it is an enlargement,

if the scale factor less than 1, then it is a reduction.

given the two geometric figure:

by definition of proportions, we have