A gas heating system costs $22400 to install and has operating costs of $219 per year. Write an expression for the total cost of the gas heating system after x years.

Installing or replacing a furnace costs $5,500 with a typical range between $2,616 and $6,319 including materials, equipment and labor. Replacing a gas furnace runs from $3,800 to $10,000 or more for high efficiency models in complex installations.

Step-by-step explanation:

i do not know this sorry : (

multiply length by height. multiply the length by the height, and then double the product. work out 10 x 10 results = 100 square inches, then work out 100 x 2 = 200. the answer is 200 square inches.

step-by-step explanation: