exam Maths Puzzle Numerical Ability

solve each of the following quadratic inequalities. express your answers in interval notation.

a) 2y^2+5y-63<0

b) 4y^2+10y-14<0

c) x^2+x-30<0

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exam Other Question

((x/(x-2))-(12/((x^2)-4))-(3/(x+2)))=0 A factory employs skilled labores at 25 an hour and un skilled at 12 an hour. The hourly cost of the factorys 24 workers is $405. Howmany of each type of laborer works at the factory?