Use the graphing utility to graph f. f ( x) = x2 - 5x + 4 3x - 12Determine where f is continuous. (Give your answer as an interval in the form (*,*). Use the symbol 00 for innity, U for combining intervals, and an appropriate type of parenthesis "(",")", " [","]" depending on whether the interval is open or closed. Enter G if the interval is empty. Express numbers in exact form. Use symbolic notation and fractions where needed.) f is continuous on: What advice might you give another student about using technology (such as a graphing calculator) to determine where a function is continuous? O Vertical asymptotes are the only kind of discontinuity that you need to look for. 0 A11 functions that appear continuous based on their graph are continuous. O Some discontinuities may not be apparent when using graphing technology. The function 3(1) = 2 9t + 51'2 describes the distance 3 from the origin at time t of an object in rectilinear motion. Find the velocity v of the object at any time I. (Use symbolic notation and fractions where needed.) When is the object at rest? (Use symbolic notation and fractions where needed.) At 1' seconds, an object in rectilinear motion is 3 meters from the origin, where 50') = 813 4t + 5. a) Find the velocity of the object at t = 0. (Use symbolic notation and fractions where needed.) 11(0) = | b) Find the velocity of the object at t = 7. (Use symbolic notation and fractions where needed.) 12(7) = | m/s m/s