Answer:
13
Step-by-step explanation:
Mean would mean average, which in this case is 
so your equation would look like 
Next multiply both sides by to clear the fraction 
to get 
Subtract 69 from both sides 
you get 
Answer:
=4x2+12x+9
hope it helps you!
Step-by-step explanation:
Answer:
The school is closest
Step-by-step explanation:
Plot the point of the library and measure the distance from the library to each location.
Answer: y=3x+2
Step-by-step explanation:
y=mx+b
Plug in point (x,y)-->(6,8) m=3
8=3 (6) +b
2=b