The airmail rates to a country are shown.
Type | Mass | Cost |
Letters |
First 8 g | 29j¢ |
Every additional 4 g or less | 5j¢ | |
Postcards | Per piece | 40¢ |
Xavier sent 4 postcards and a letter. The letter weighed 18 g. How much did Xavier pay in total? Give your answer in terms of j in the simplest form.