She would have done 512 jumping jacks on the 10th day.
So we have the system of equations:

equation (1)

equation (2)
To use substitution, we are going to solve for one variable in one of our equations, and then we are going to replace that value in the other equation:
Solving for

in equation (2):



equation (3)
Replacing equation (3) in equation (1):






equation (4)
Replacing equation (4) in equation (3):



We can conclude that the solution of our system of equations is <span>
(7/5, 21/10)</span>
Answer:
110
Step-by-step explanation:
35+35=70 180-70=110
Answer:

Step-by-step explanation:

The domain are the set of all possible values for x.
There are no restrictions on the value of x.
The domain is all real numbers.
Answer:
D C
Step-by-step explanation:
first one because you do 5 to left and makes it 5 because its 1 per mile
seound one because go up 7 its at the school.
and sorry i cant see the other ones.
Step-by-step explanation: