Correct answer is: actual wingspan of airplane is 6 inches.
Solution:-
We are given that wingspan is 'a' feet and tail span is 'b' feet in a scale drawing.
And we are also given that tail span is 2 inches that is b=2 inches and 
Let us plugin the b value in above equation.

Multiplying with 2 on both sides.
a=3X2=6 inches.
Hence actual wingspan of airplane is 6 inches.
Answer: C. y=25x+125
Step-by-step explanation:
it multiplies by 75 and adds 125 each time
Y^2 / 4y-16 if you need the solving steps let me know
Addition will be the last operation