1 adult=$9
? =$72
?= $72× 1=$72
$72÷$9=$8 or R8
1 child=$4.50
? =$72
?=$72×1=$72
$72÷$4.50= R16
To 4.5, add the difference between the two numbers (0.1) multiplied by some irrational number greater than 1
That decimal would be: 32% = 0.32
So, your answer is 0.32
Hope it helped.
Answer:
The middle one because there is only 1 value of y for every value of x.