Answer:
$22.05
Step-by-step explanation:
2 1/2/10.5=5 1/4/x
55.125=2 1/2x
x=22.05
Hope this helps plz hit the crown :D
Using pythagorean theorem :

Answer: about seven
The answer is 9
You can see the graph is linear and at $45 it lines up with 9 items purchased