There are 15 students in the preschool class. For every 7 kids there is 1 teacher. Which ratio shows the number of teachers to t
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His monthly bill before he installed the new windows was $339.074...
<u><em>Explanation</em></u>
Suppose, his monthly bill before he installed the new windows was dollar.
As his energy bill was decreased by 7.1% per month after installation, so <u>the amount of bill decreased</u> dollar
Given that, his new energy bill was $315. So the equation will be...
So, his monthly bill before he installed the new windows was $339.074...