73 people are on the train. At a train stop 24 people get off and 19 people get on. How many people are on the train now?

A total of 68 people will be on the train. You subtract 73-24 which gets you 49 people then you add the 19 people that get on to get 68.

answer: the equation matches the regression

step-by-step explanation:

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