Read from the table to answer the questions.
- If a household used 600 kWh of electricity in 2011, what would they have paid?
- How much more would you pay for 1 000 kWh of electricity in 2012 compared to 2011?
- What was the percentage increase for 150 kWh of electricity between 2011 and 2012?
- Was the percentage increase higher for lower electricity consumption, or for higher electricity consumption?