exam Maths Puzzle Numerical Ability

-7|2x - 2| + 10 = -4

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A speedboat could travel at 6 times the speed of the current. Thus, it could travel 350 miles downriver in 3 hours more than it took to travel 150 miles upriver. What was the speed of the boast in still water? find the zeros of the function h(x)= x2 +23x+60 by factoring