Answer:

» Collect like terms, r terms on the left hand side by subtracting r from both sides and adding st to both sides

» On the left hand side, factorise out r

3 because 4×3=12 and if you divide12÷3/4 it helps you check
The total money in august minus the total at the end of december (250)
7(x+4)>0
Distribute 7. (multiply by x and 4)
7x+28>0
Subtract 28 on both sides.
7x>-28
Divide by 7 into both sides.
x>-4
x>-4 is the answer.
I hope this helps!
~kaikers
1/5
Y2 -Y1
____
X2-X1
5-4=1 = 1
________
2- - 3 = 5