Answer:
The scale of the drawing is 
Step-by-step explanation:
we know that
If two figures are similar, then the ratio of its areas is equal to the scale factor squared
Let
z ----> the scale factor
x ----> the area of an house on a scale drawing in square inches
y ---> the actual area of the house in square feet

we have


substitute

simplify

square root both sides

therefore
The scale of the drawing is 
Answer:
2 -3
Step-by-step explanation:
7x + 12 = 12
-12 -12
subtract 12 from both sides of the equation as seen above
7x = 0
divide both sides by 7 to isolate the variable
x = 0
B is the correct option.
Answer:
21 3/4
Step-by-step explanation:
Ax + c = R (subtract c from each side)
Ax + c - c = R - c
Ax = R - c (divide A from each side)
Ax/A = (R-c)/A
x = 
<-answer