Answer:
(y^2-u^2)/2a = d
Step-by-step explanation:
We will move u^2 on left side and divide everything by 2a
n= -9
-3 ( n+5 ) = 12
-3n - 15 = 12
-3n = 12+15
-3n = 27
n = -27/3
n = -9
Is there like a picture or something?
Answer: B
Step-by-step explanation: put the points on a graph
The 3 units from 12 on a number line is 4units
12 + t = A (amount spent)