Simplify the rational expression. State any restrictions on the variable.

(t^2 + t - 6)/(t^2 - 9)

(t - 2)/(t-3), t not equal 3, t not equal -3
(t + 2)/(t-3), t not equal 3
(t + 2)/(t+3), t not equal 3, t not equal -3
(t -+2)/(t-3), t not equal 3, t not equal -2

The simplified rational expression is (t+2)/(t-3), with restrictions t cannot equal 3.