Martin-Gay, Beginning Algebra, 5ed 22 Strategy for Problem Solving General Strategy for Problem Solving 1Introduction: Understand the problem by: Read.

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Presentation transcript:

Martin-Gay, Beginning Algebra, 5ed 22 Strategy for Problem Solving General Strategy for Problem Solving 1Introduction: Understand the problem by: Read and reread the problem Choose a variable to represent the unknown Construct a drawing, whenever possible 2.Body: Translate the problem into an equation and solve the equation 3.Conclusion: Interpret your result State your conclusion

Martin-Gay, Beginning Algebra, 5ed 33

44

55

66

77

88 Let the variable represent the number you know least about.

Martin-Gay, Beginning Algebra, 5ed 99 Let x = Sue’s weight (pounds) x + 15 = Mary’s weight (pounds) Let w = width of rectangle (inches) 2w + 4 = length of rectangle (inches) Let x = Larry’s earnings (dollars) x  = Joe’s earnings (dollars)

Martin-Gay, Beginning Algebra, 5ed 10 (dollars)

Martin-Gay, Beginning Algebra, 5ed 11

Martin-Gay, Beginning Algebra, 5ed 12 = 2x =.05x = 6.5h =.25q = 16x

Martin-Gay, Beginning Algebra, 5ed x = total cost (dollars)

Martin-Gay, Beginning Algebra, 5ed 14 = = p – 0.12p

Martin-Gay, Beginning Algebra, 5ed 15

Martin-Gay, Beginning Algebra, 5ed 16 I Introduction II Body

Martin-Gay, Beginning Algebra, 5ed 17

Martin-Gay, Beginning Algebra, 5ed 18 I Introduction II Body

Martin-Gay, Beginning Algebra, 5ed 19 I Introduction II Body