Answer: It depends on what categories your teacher has and what percent of your grade it is worth. I would recommend an online grade calculator
Answer:
The solution for given system of equation is:
and ordered pair is: 
So, (1,3) is not solution to the given system of equations.
Step-by-step explanation:
we can solve the system of equations to find the value of x and y and then verify if (1,3) is a solution or not.
The system of equation given is:

Solving:
Let:

Put value of y from equation 2 into equation 1

Now, put value of x in equation 2 to find value of y

So, the solution for given system of equation is:
and ordered pair is: 
So, (1,3) is not solution to the given system of equations.
Convert the percentage into a decimal


20% of 50 is 40
Answer:
9x - 9
Step-by-step explanation:
6x + 3x = 9x. 1- 10 = -9
Combine the like terms
7,000+500+2
2(3751)
7x10^3+5x10^2+2X10^0
5(1500.4)