An equation is formed of two equal expressions. The number of chocolate candles Jacqui sell is 21. Thus, the correct option is D.
What is an equation?
An equation is formed when two equal expressions are equated together with the help of an equal sign '='.
Given that c represents the number of chocolate candles and m represents the number of cinnamon candles. Also, The number of chocolate candles that Jacqui sold is three less than twice the number of cinnamon candles. Therefore,
c = 2m - 3
Furthermore, each cinnamon candle sells for $3.50 and each chocolate candle sells for $2.50. Therefore, She raised a total of $94.50 for the trip.
3.50m + 2.50c = 94.50
3.50m + 2.50(2m - 3) = 94.50
3.50m + 5m - 7.5 = 94.50
8.50m = 102
m = 12
Substitute the value of m in the first equation,
c = 2m - 3
c = 2(12) - 3
c = 21
Hence, the number of chocolate candles Jacqui sell is 21. Thus, the correct option is D.
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