The airmail rates to a country are shown.
Type | Mass | Cost |
Letters |
First 8 g | 28f¢ |
Every additional 4 g or less | 10f¢ | |
Postcards | Per piece | 50¢ |
Elijah sent 4 postcards and a letter. The letter weighed 14 g. How much did Elijah pay in total? Give your answer in terms of f in the simplest form.