In one month julian made 35 local phone calls and 20 long distance calls
what was her rate of local calls to long distance calls for that month

local calls per 1 long distance call.

Step-by-step explanation:

Local calls

Long distance calls

For 20 long distance calls local call

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