There is no answer because you did not give us the "following".
There are many of them but the most common are:
1.) Photosynthesis
2.) Solar Energy
3.)Thermochemical Reactions
Answer:
$7250
Explanation:
The selling price was $12,000. Add $2,500 to find 2 times the original selling price.
12,000 + 2,500 = $14,500.
Divide by 2 to find the original selling price = $14,500/2 = $7250.
