5
Write -22 in the middle of the graph, number the rest of the graph accordingly and draw an open circle around the line under the -22 and draw a line along the graph to the right
7
Write 15 in the middle of the graph and number the rest of the graph accordingly, draw a colored in circle under the 15 on the graph and draw a line to the to the right
Sorry, I'm on the road and couldn't take a picture of the solution
It's hard to explain, but theres a trick to it too.
Answer:
C = 10
Step-by-step explanation:
+ 
= 
+ 
= 100
= 10
