The heavy line means the values on this part are in the solution set. . The open circle means that this value ( - 3) is NOT included in the solution set.
So the answer is x > -3.
A= there are "4"one fourths in one hour and he hikes 2 miles every hour
B= 1, 1 1/2, 2, 4
C= it going to be 1/3 mile for every 1/6hour and she hikes 2 miles every hour.
D= 2/3, 1, 2, 4
AB & CD
they have the same degree & are equally apart.
