Two models of cellular telephones, red and blue, are stored in boxes. one box weighs twelve pounds and contains four of the red models and one blue model. another box weighs eight pounds and contains one blue model and two red models. how much does each model weigh? the blue model weighs two pounds, and the red model weighs four pounds. the red model weighs two pounds, and the blue model weighs six pounds. the red model weighs two pounds, and the blue model weighs four pounds. the blue model weighs five pounds, and the red model weighs eight pounds.

More challenges: 1) factor out the indicated quantity.8mn² + 7mn - m : factor out the quantity -m2) factor the polynomial by grouping.2vw + 7cv + 14cw + 49c²3) factor completely using the difference of squares along with factoring by grouping.25v³ - 25v² - 4v + 44) factor the sum of cubes. 125x³ + 645) q³ + 27r³6) factor completely. use difference of squares.729p^6 - 6^67) solve the equation(7x + 4)(9x - 1) = 08) a. find the values of x for which f (x) = 0b. find f (0)f (x) = x² + 2x - 489) find the x and y-intercepts for the function defined by y = f (x)f (x) = (x + 3)(x + 4)(x - 1)²10) factor the trinomial completely by using any method. remember to look for a common factor first. 3v² - 2v - 16