A family wants to replace their old oil-fired boiler with an air source heat pump (GSHP) system. The initial cost of the ASHP system is $6800 but it will save the family $20 per month in heating and cooling costs. Determine the payback time both in months and in years and months.

Water flows at a steady rate from a tap. its takes 40 seconds to fill a 4 litre watering can from the tap. the rate at which water flows from the tap is halved. complete: 4 litres into cm3

The graph and table shows the relationship between y, the number of words jean has typed for her essay and x, the number of minutes she has been typing on the computer. according to the line of best fit, about how many words will jean have typed when she completes 60 minutes of typing? 2,500 2,750 3,000 3,250

Rewrite the following quadratic functions in intercept or factored form. show your work. f(x) = 3x^2 - 12