we know that
A jar of jelly that weighs \(4.25\) ounces costs \(\$2.89\)
so
by proportion
Find the cost of one ounce
\(\frac{2.89}{4.25}\frac{\$}{ounces} = \frac{x}{1}\frac{\$}{ounce}\\ \\x=\frac{2.89}{4.25}\\ \\x=\$0.68\)
therefore
the answer is
\(\$0.68\)
