Answer:
payback period is 9.4785 ≅ 9.5 years
Explanation:
BTU stands for British thermal units and MCF stands for the volume of 1,000 cubic feet.
We know that one thousand cubic feet (Mcf) of natural gas equals 1.037 million Btu.
Difference between heat loss before and after installation = (42-28) millions BTU = 14 millions BTU
14 million BTU is equivalent to --
1.037 million BTU = 1 MCF
1 million BTU = (1/1.037) MCF
14 million BTU = (1/1.037) x 14 MCF = 13.5004 MCF
Cost of 13.5004 MCF = = $8.94 x 13.5004 = $120.6935
Pay back period = (1144/120.6935) = 9.4785
Therefore, her payback period is 9.4785 ≅ 9.5 years
<span>When molly told her therapist about her frightening car accident, the therapist instructed her to close her eyes and verbalize any further thoughts stimulated by this experience, even if they were scary or embarrassing, thus the therapist was making use of a technique known as the free association.</span>
Democracy originated in greece from the idea of the demos, which literally means: mob
Greek democracy was established because of the idea that a person shouldn't be too powerful and rule the lives of others. They were so ruthless at it that they would choose people to rule and then if they became too powerful and popular they would exile them or punish them or similar things.
It was a kind of mob mentality that supported new and popular people. It was not very democratic however according to modern understanding of democracy because many were not allowed to vote at all, including slaves who existed as an entire social class.
Learn about democracy;
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