Question: need the step 7. Determine the intervals of increase/decrease for the function f (x) = x+4 (5 marks) 8. Two cars are speeding towards an

need the step

7. Determine the intervals of increase/decrease for the function f (x) = x+4 (5 marks) 8. Two cars are speeding towards an intersection from different directions. Their accelerators are stuck and their brakes don't work. Car A is 300m south of the intersection and is travelling north at 15m/s. Car B is 500m west of the intersection and is travelling east at 20 m/s. Determine the closest distance the cars get to each other

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