I think it's B but if I where you I would wait until someone else comments on here to so you know for sure
Answer:
Step-by-step explanation:
She added 3x and -2x, getting 5x, instead of x. She needs to pay more attention to the positive/negative signs.
Answer:
900 m
Step-by-step explanation:
l*w*h
12 m (l)*5 m (w)*15 m (h)= 900 m altogether
Answer:
The answer is G
Step-by-step explanation:
2 x 6 = 12
12 - 6 = 6
_________
-2 x 6 = -12
-12 - 6 = (-18)