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A charity barbecue charged $7 per hamburger and $4 per hot dog. They earned $224 in the end. What key information is missing? The unit cost for the hamburgers and hotdogs. The number of hamburgers and hotdogs sold. The dollar value of the sold hotdogs and hamburgers. We have everything we need. A Grade 9 "Welcome Dance" was held. The cost for Grade 9s was less than the rest of the school. 723 total students attended and paid. $3,365 was earned. Which "let" statements correctlyrepresent this situation? N is the cost of the grade 9s R is the cost of the rest. N is the number of Grade 9s who paid R is the number of other students who paid. N is the total money received by Grade 9s. R is the total money received by the rest of the students. A total of 74 cars and pick-up trucks drove through a car wash. Which equation correctly represents this situation? ct = 74 c + t = 74 6t + 5c = 74 c - t = 74 André has a jar of dimes and quarters. He is certain that the total value inside the jar is $23.70. Which equation represents this situation? 66q + 72d = 23.70 we don't know the number of either coin; we can't make an equation! 0.10d + 0.25q = 2370 0.25q + 0.10d = 23.70 The average weight of a Grade 9 boy is 59 kg. The average weight of a Grade 9 girl is 51 kg. On a Grade 9 class trip, a single school bus had a student weight of 2,232 kg. Which equation correctly represents this situation? 9b + 9g = 2232 b + g = 2232 59b + 51g = 2232 59g + 51b = 2232 On a standard full-size piano there are 16 fewer black keys than white keys. Which equation correctly represents this situation? b + w = 18 b - w = 18 w - b = 18 w = 18b A concert charged $5 for seniors and $9 for non-seniors. 102 seniors paid and $1,149 was received. Which expression represents how many non-seniors paid? 1149 - (102(5)) (1149 - (102(5))/9 there's not enough information 102(5) - (1149 ÷ 9) |