Please help with number 8 ! !!!!!!!!!!15 POINTS!!!!!!!!!!!!!!!!!!!!

Answer:
[tex]\boxed{\$ \: 76.50}[/tex]
Step-by-step explanation:
[tex]markup \: percent = \frac{new \: price - original \: price }{original price}[/tex]
[tex]1.25=\frac{n-34}{34}[/tex]
[tex]42.5=n-34[/tex]
[tex]n=76.5[/tex]