Each of these is proportional to the other. Meaning, if you put the price over the pounds, then you get a fraction that remains consistent throughout the entire table and beyond.
[tex]\frac{price}{pounds}=\frac{10}{4} =\frac{5}{2}[/tex] so [tex]\frac{5}{2}[/tex] will be our constant ratio. With our formula, we know that the two equal each other, so [tex]\frac{price}{pounds}=\frac{5}{2}[/tex].
[tex]\frac{x}{10}=\frac{5}{2}\\[/tex] so [tex]2x=50\\x=25[/tex]
[tex]\frac{x}{12}=\frac{5}{2}[/tex] so [tex]2x=60\\x=30[/tex]
12 pounds of asparagus is $30.00
