Respuesta :
Answer:
C: 4
Step-by-step explanation:
You call the number x. Then you do (x-7) * 3= -9.
3x-21=-9
3x=12
x=4
Answer:
C.) 4
Step-by-step explanation:
Let's try all of the answer choices to see what we get.
-30 - 7 = -37
-37 × 3 = -111
Okay, so we can rule A out. Let's try the next one.
30 - 7 = 23
23 × 3 = 69
We can rule B out too. Let's move on.
4 - 7 = -3
-3 × 3 = -9
We worked it out and we got -9,, we're going to check the last one to be sure.
-4 - 7 = -11
-11 × 3 = -33
Now we are sure the answer is C.