exam Maths Puzzle Numerical Ability

solve and graph
3x+18 greater then equal to 9 and 3x- 18 greater than less than minus 15

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exam Other Question

-1^-2 =
a. 1
b. -1
c. 2
d. None of the above m over n......equals p over q. solve for p.

i dont understand how to solve this probl;em.