12c + 15m = 150
does not fit
does not fit
does not fit

An online store sells CDs for $12 each and movies for $15 each. Yolanda bought c CDs and m movies for $150.

Last football season, Demarcus had scored a total of 150 points. In the next game, c, he scored 12 points and in the second game, m, he scored 12 points.

Best Bakery sells cakes for $12 each and muffins for $15 per dozen. One day, the bakery sold c cakes and m dozen muffins for total revenue of $150.

Incorrect. Each CD costs $12, which goes with the variable c. Each movie costs $15, which goes with the variable m.

Correct! According to the equation, 12 and 15 should be rates, but in this situation, 12 and 15 are total values.

Incorrect. Each cake generates $12, which goes with the variable c. Each dozen muffins generates $15, which goes with the variable m.