exam Maths Puzzle Numerical Ability

Graph 3x + 2y = 6 on graph paper.

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exam Other Question

If a dirt track car is going around an oval dirt track that is 1/4 mile long, at a lap time of 13.6 seconds, what is an average speed the car is going per lap. Or what is an equation i can use to figure out the approxiamate speed of the car. If a river flows at a rate of 3mph and a boat travels 60 miles upstream and returns in a total time of 9 hours. How fast would the boat travel be traveling in still water?