exam Maths Puzzle Numerical Ability

Solve the following inequality and express the solution as an interval: -18/6x-42>0

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exam Other Question

I have been trying to figure out how this is set up but I am confused. So far I not sure if this is the right set up: n-4=96

Word Problem:
The product of a number and 4 less than the number is 96. Find the number. find smallest positive interger and the largest negitive integer that are upper and lower boundries.
P(x)= x^4 - 3x^3 - x^2 + 3x + 3