To find a number that makes the expressions equivalent, we have to solve for m.
12(–1.4m + 0.4)= m + 0.2 multiply 12 times all in parentheses (12*-1.4m) + (12*0.4)= m + 0.2 -16.8m + 4.8= m + 0.2 add 16.8m to both sides 4.8= 17.8m + 0.2 subtract 0.2 from both sides 4.6= 17.8m divide both sides by 17.8 0.2584269663= m
The actual is 60 feet long, the drawing is only 1 foot long. So the scale factor must be 1/60. You know that the scale factor has to be less than one in this case because you're going from a bigger measurement to a smaller measurement(60 to 1).
