Step-by-step explanation:
x=y+7
3x+2y=6
so wherever you see X you but y+7
3(y+7)+2y=6
3y+21+2y=6
group like terms
3y+2y=6-21
5y=-15
divide by 5
y=-3
to find x sub the y value in the equation
x=y+7
x=-3+7
x=4
Yes the equation is linear because the linear equation is y=mx+b and y=85x-600 is linear.
I looked it up and it says:
Vernonia School District 47J v. Acton, case in which the U.S. Supreme Court on June 26, 1995, ruled (6–3) that an Oregon school board's random drug-testing policy for student athletes was reasonable under the Fourth Amendment.
Hope this helps
Use this and put in 8 for r 
26.24
Answer:
189.1
Step-by-step explanation:
