Perform the indicated operation. Show all necessary work. a -2-(-9) b -2 -9 c -2- (-9)-(-2 please help i need to finish a test

a=7 b=11 c=9

Step-by-step explanation:

-2-(9)      -2-(9) = -2+9=7 b -2-9=-11 c -2-(-9)-(-2) = -2+9+2=9

i'm assuming it's looking for the missing length, which should be 4cm

hope this !

the answer is c.

for continuous functions, they continue in the same pattern and you have to find that pattern kinda like slope