I have tried this and I think it is c
Answer:
10 x 6,000 is 60,000. now divide it by ten. its 6,000 because its 1/10 of it so yes, 6,000
Answer:
29 stories - 49 stories = number of stories they need to go
28 - 49 = 21
the answer is 21
they have 21 more stories to go
9 or -9 because if -9 is squared the negative cancels