Answer: 3f
Step-by-step explanation:
Answer: after 3 days
Step-by-step explanation: Step-by-step explanation: The sister has to pay rent which is $60 which means she has negative $30 in three days the sister would have earned $60 and in 3 days the brother would have earned $60
The answers for the problems are: 6. -18
9. 6
12. -40