So do (21/2+49/4)-3/2=You get 21 1/4 miles
Since 21 1/4 is close to 21 1/2, this answer is reasonable. So A is the answer
Scale Factor is just being multiplied to the width and length.
Answer is $14.99. You would do 89.94 divided by 6 which equals 14.99
The formula of the area of a triangle:

b - the bash - the height
We have:
b - the base3b - the height486 - the area
Substitute:
Answer: The length of the height is equal 54 units.