1. The prot, P, of a video company, in thousands of dollars, is given by P(x) = -5x2 + 550x - 5000, where x is the amount spent on advertising, in thousands of dollars a. Determine the amount spent on advertising that will result in a prot of $0 (In other words, determine the amount that must be spent on advertising in order for the company to break even). [3 App] 2. A jet flew from Tokyo to Bangkok a distance of 4800km. On the return trip, the speed was decreased by 200km/h. The difference in the times of the two ights was 2 hours. What was the jet's speed from Bangkok to Tokyo? [5 T/l] 3. Determine the quadratic function that has the given roots and passes through the given point. Express each function in standard form a. x = 2 i E, Given Point: (2,10) [5 WI] b. x = and x = 4, Given Point: (1,5) [5 T/l] 4. i. Use the discriminant to determine the number of points of intersection of the line y = 3x + 5 and the quadratic function f (x) = 31;:2 2x 4. [4 App] ii. Solve to find the points of intersection [2 App]