exam Maths Puzzle Numerical Ability

Is the following trinomial a perfect square? why or why not
x^2+18x-81

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exam Other Question

My equation is

1 - 6d < d + 8

If someone can help me with this prblem I would be very thankful

Kia,14
Butler County recorded 8 3/4 inches of rain during the past 5 months.

If this trend continues, how many inches of rain will fall in the next 2 months?