Answer:

Step-by-step explanation:
Given:

Let's substitute -3 for 

Now, let's solve



Hope this helps
Answer:
12 hours
Step-by-step explanation:
Let the number of hours be represented as h.
Sarah's surfboards charges a fee of $60 to rent a surfboard and then $10.50 per hour.
Mathematically ,
60 + 10.50h
Sally's surfboards does not charge a fee, but they cost $15.50 per hour
Mathematically,
15.50h
Equating both equations together
60 + 10.50h = 15.50 h
Collect like terms
60 = 15.50h - 10.50h
60 = 5h
h = 60/5
h = 12 hours
Therefore, the number of hours that the cost will be the same to rent a surfboard for each shop is 12 hours.
Answer:
c
Step-by-step explanation:
Answer:
3,000
Step-by-step explanation:
Just multiply every decagram by 1,000
X-3y=-5
-(x+3y=1)
-------------
-6y=-6
y=1
x=-2