Number of tables al four restaurants have; = 4 * 30 =120 tables Two new restaurants + 4 =6 restaurants (120+15+9)= 144 tables Mean = total # of tables/ total # of restaurants; 144/6 =24 This is the mean so it decreases. I hope this helps even though you didn’t actually post the number line
Subtract 146 by -35 (146 - -35) When a negative it being subtracted replace it with a positive because two negatives make a positive (146+35) which gets you 181
