Question

-9t + -5 > 40 or -9t + 5 < -13

Answer 1

-9t +(-5) > 40
-9t - 5 > 40
-9t > 40 + 5
-9t > 45
-9t/-9 < 45/-9 (change the sign when dividing by a negative)
t < - 5

-9t + 5 < - 13
-9t < -13 - 5
-9t < - 18
-9t/-9 > -18/-9 (change the sign)
t > 2

2 > t < -5