A recipe book shows measurement conversions for cups to ounces. It shows that 0.5 cup equals 4 ounces and 1.5 cups equals 12 ounces.

Write an equation that shows the proportional relationship between cups and ounces where c represents cups and n represents ounces.

c = 0.125n
c equals 4 over 0.5 times n
n equals 0.5 over 4 times c
n = 0.125c