4(5x-20)= -20
20x-80= -20
+80 +80
____________
20x=60
_______
20
x=3
This is a difference of squares problem. You just have to make sure every term is a perfect square and that there is subtraction in the problem.
18+30=48
48+40=88
88+40=128
128+50=178
Thats all i found so far in the pattern
30,40,40,50
then it drops
by 140 then adds by 30..
I dont know how else to explain it
Answer:
=5
Step-by-step explanation:
4-9= -5
2-3 = -1
=5
.....
The slope is 1
The y-int is (0,-7)