I really don't understand this.... You want 12feet to equal 9inches on the blueprint. What scale factor must you use to create an accurate blueprint?

12/9 = x/1

12/9 = 1 1/3

1 inch = 1 1/3 feet

so the scale factor is

1 in : (12+4 in) = 1:16

THANKS FOR HELPING ME ON MY QUESTION!!!

To find the scale factor needed to create an accurate blueprint, we need to compare the lengths of the actual distance (12 feet) to the equivalent distance on the blueprint (9 inches).

First, let's convert 12 feet into inches. Since 1 foot is equal to 12 inches, we can calculate:

12 feet = 12 x 12 = 144 inches

Now that we have the equivalent length in inches, we can determine the scale factor by dividing the length on the blueprint (9 inches) by the actual length (144 inches):

Scale factor = 9 inches / 144 inches

Simplifying the fraction, we get:

Scale factor = 1/16

Therefore, to create an accurate blueprint, the scale factor you need to use is 1/16. This means that every inch on the blueprint represents 1/16 of an inch in real life.