Replace x with 18, solve the equation. If it equals -4 it’s a solution.
Y = -6(18) - -87
Y = -108 + 87
Y = -21
-21 does not equal -4 so (18,-4) is not a solution.
4n^2
..............................
Answer:
((w+4)/3)+b)/2
Step-by-step explanation:
w = 3(2a-b)-4
w+4 = 3(2a-b)
(w+4)/3 = 2a - b
((w+4)/3)+b = 2a
a = ((w+4)/3)+b)/2
So all you have to do is divide 12.5 by 20. So the unit rate is .625