A photograph is 16 inches wide and 9 inches long and is surrounded by a frame of uniform width x. If the area of the frame is 84 square inches, find the uniform width of the frame.
a. Make an illustration of the described photograph. b. What is the area of the picture? c. If the width of the frame is xinches, what is the length and width of the photograph and frame? d. What is the area of the photograph and frame? e. Given the area of the frame which is 84 square inches, formulate the relationship among three areas and simplify. f. What kind of equation is formed? g. How can you solve the value of x? h. How did you find the activity? What characteristics of quadratic functions did you apply to solve the previous problem?
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