16 positive and 26 negative.......16 - 26 = -10 <==
If its a reflection across the y axis the x value is reflected and the y value stays the same, so (-3,7)
52 = 50
512= 500
500/50 = 10
The initial measure is:
m1 = 28 ft
The real measure must be:
m2 = 14 ft
The correct procedure to determine the scale factor is:

Dividing both numbers between 14 we have:

Rewriting:
Answer:
Zelie should have divided both numbers by 14.
The answer is 3: 3+5+8=5+8+3