exam Maths Puzzle Numerical Ability

Please Help.
(x+12)(x-1)(x+6)>0

Solve. what is the solution set?

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exam Other Question

Business and finance. The inventor of a new product believes that the cost of
producing the product is given by the function
C(x) _ 1.75x _ 7000
How much does it cost to produce The difference between two positive integers is 42. One integer is three times as great as the other. Find the integers.