Find two consecutive integers such that ten more than twice the smaller number is seven less than three times the larger

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What value is a discontinuity of x squared plus 8 x plus 4, all over x squared minus x minus 6?

How many liters of peroxide should be added to 12 liters of an 8% peroxide solution so that the resulting solution contains 16% peroxide?   original added new amount of peroxide 0.96 liters x 0.96 + x amount of solution 12 liters x 12 + x 0.18 liter 1.14 liters 1.92 liters 2.10 liters