Answer:

Step-by-step explanation:

→ First look at the first term of each expression and see if they can be simplified, and they can

→ Now look at the a terms, since a larger one is at the top, you subtract

→ Now simplify the b and c terms

Since the number is 8 you round up so it's 9.0
Answer: 22 minutes
Step-by-step explanation: 500-170 means that he drained 330 gallons of water so 330 divided by 15 gallons a minute so you get 22 so it takes 22 minutes to have 170 gallons left in the pool
Answer:

Step-by-step explanation:
= 
2*(pq)= 2(
)= 
-3
= -3
= 
=
=
