Automobile traffic passes a point P on a road of width w feet with an average rate of R vehicles per second. Although the arrival of automobiles is irregular, traffic engineers have found that the average waiting time 7 until there is a gap in traffic of at least t seconds is approximately T = tell seconds. A pedestrian walking at a speed of 3.3 ft/s requires t = 25 s to cross the road. Therefore, the average time the pedestrian will have to wait before crossing is f(w, R) = (#2 ) WR13.3 s. What is the pedestrian's average waiting time if w = 22 ft and R = 0.2 vehicle per second? (Use decimal notation. Give your answer to two decimal places.) 1 = 25.29 Use the Linear Approximation to estimate the increase in waiting time if w is increased to 24 ft. (Use decimal notation. Give your answer to two decimal places.) Af = Incorrect Question Source: Rogawski 4e Calculus Early Transcendentals |Estimate the waiting time if the width is increased to 24 ft and R decreases to 0.18. (Use decimal notation. Give your answer to two decimal places.) Incorrect What is the rate of increase A in waiting time per 1-ft increase in width when w = 30 ft and R = 0.3 vehicle per second? (Use decimal notation. Give your answer to two decimal places.) Incorrect