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Rufina [12.5K]
3 years ago
9

A solar heating system costs $25,000 to install with a yearly operating cost of $300. An electric heating system costs $6,500 to

install but incurs a yearly operating cost of $4,000. How many years will pass before the total cost of the solar heating system is less than the total cost of the electric heating system? Round your answer to the nearest year, if needed. Type in your numerical answer only; do not type any words or letters with your answer.

Mathematics
1 answer:
Stells [14]3 years ago
5 0

Answer:

it should take around 4 to 5 years before you start to see a difference  

See the attachment for more info.

Step-by-step explanation:

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tatiyna
<span>The vertex of the parabola is the highest or lowest point of the graph. 

</span><span>y=-4x^2+8x-12 = -4 (x^2 -2x +3) 

Lets work with this now: </span>x^2 -2x +3

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