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3. (10 pts) Find a possible formula r for the following function. (Write your answer in function notation and in a factor form) 4. (10 pts) A box with a square base and no top is to be made from a square piece of cardboard by cutting 3 in. squares from each corner and folding up the sides. The box is to hold 363 in3. Let x be the length of the cardboard. Write the volume, v, of the box in term of the length. Also, how big a piece of cardboard is needed? Function: Length: Width: x3 - 8 x2 + 5x + 6 ' a. Does the rational function have the horizontal or oblique asymptote? 4. (10 pts) Suppose r(x) = b. Find the asymptote. in part (a): c. Find the vertical asymptotes