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(7.3) Patterns, relationships, and algebraic thinking. The student solves problems involving proportional relationships. The student is expected to: (B) estimate and find solutions to application problems involving proportional relationships such as similarity, scaling, unit costs, and related measurement units. 7.3B STUDENT ACTIVITY #1

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Problem #1: A caterer has been hired to make trays of appetizers for a wedding reception. The price for 2 trays is $44.50. The bride has ordered 17 trays. How much will she pay for 17 trays of appetizers? Identify the ________ being ________. Be certain to compare the corresponding ________ in the same ________. ratioscompared quantitiesorder x17 $44.502 cost of traysnumber of trays Write a _________ using the two ________. Let x equal the cost of the _____ trays. ratios proportion 17 trays cost 2 44.50 17 x = trays cost 2 17x 44.50

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Use cross products or another appropriate method to solve the proportion. The bride will pay _______ for 17 appetizer trays. 2 44.50 17 x = 2 x 44.50 = 2x1744.50=2x 17x 44.50 17 1 3 05 3 31 0 5 4 4 + 05657. 756.50 =2x 22 x = ______ 756.50 2 2 3 1 5 7. - 6 - 14 1 6 8 - 16 05 2 - 4 1 0 5 - 10 0 $378.25 378.25

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estimate and find solutions to application problems involving proportional relationships such as similarity, scaling, unit costs, and related measurement.

estimate and find solutions to application problems involving proportional relationships such as similarity, scaling, unit costs, and related measurement.

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