(a) Assume that traffic flows at a rate of 240 vehicles per hour on the stretch of road between intersections D and A. Find and X3- the flow rates X, X2

The cross-section of a hill with a steep cliff face is modelled by the equation: where y is the height of the ground above sea level, measured in decametres (dam), and is the horizontal distance from the sea, also measured in decametres. The model applies for values of in the range 0.01 ≤ x ≤ 3. a) Find the formula that describes the gradient of the hill at any given horizontal distance from the sea. b) What is the gradient of the hill at a horizontal distance of: 10 metres (1 dam) from the sea? . dam y=-e +5ln (z) +6 • 1 metre (0.1 dam) from the sea? dam Give your answers to 2 decimal places when necessary.