exam Maths Puzzle Numerical Ability

Okay, only four problems left for my homework assignment and I cannot figure them out (go figure). I am suppose to solve the rational equations, and I can not seem to get the right

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exam Other Question

The area of triangle ABC is (6t*t*t+5t*t+9)square inches.Find the measure of the height of the triangle in terms of t.

A to C is 4t+6)in squared
Please help.

-7/8t < -14