The table shows how much a company charges for a cleaning job. Mrs Chau paid the company $310 for a cleaning job. How many hours of cleaning did she pay for?
Charges | |
First 4 hours | $130 |
Every additional hour | $30 |
Charges | |
First 4 hours | $130 |
Every additional hour | $30 |
Charges | |
First 4 hours | $130 |
Every additional hour | $30 |
Charges | |
First 4 hours | $130 |
Every additional hour | $30 |
Charges | |
First 4 hours | $130 |
Every additional hour | $30 |