Respuesta :

6.75$ this my best answer

[tex]\bf \begin{array}{ccll} lbs&\$\\ \text{\textemdash\textemdash\textemdash}&\text{\textemdash\textemdash\textemdash}\\ 2&4.50\\ 3&x \end{array}\implies \cfrac{2}{3}=\cfrac{4.50}{x}\implies x=\cfrac{3\cdot 4.50}{2}[/tex]