The screens used for a certain type of cell phone are manufactured by 3 companies, A, B, and C. The proportions of screens supplied by A, B, and C are 0.5, 0.3, and 0.2, respectively, and their screens are defective with probabilities 0.01, 0.
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Find the Range for relation R:{ (2,3), (3, 4), (-2, 5), (-1, - 2) } Select one: a. all real numbers b. { 3, - 2,-1, 0} c. {-2, 3, 4, 5} d. {-2, - 1, 2, 3}
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