HELP! QUICK! 100 POINTS! WILL MARK BRAINLIEST

1. 7230000.0

2. 0.00812.0

3. 45.21

4. 61240000.0

5. 8470.0

6. 956300.0

7. 1250000000.0

8. 63330.0

9. 456000.0

10. 845.7

Step-by-step explanation:

unless if u could do my questions, if not i wouldn't want to

x = -3

y = -18

step-by-step explanation:

to solve by substitution, substitute one variable and solve for the other. then substitute again to find the remaining variable.

x-1/3(3x-9) = -3 since y=3x-9 substittute y.

x-1/3(3x-9)=-3

x + x +3 = -3

2x+3=-3

2x+3-3= -3-3

2x=-6

x=-3

substitute again into y=3x-9

y=3(-3)-9

y=-9-9

y=-18