SOLUTION: Solve. 1) .2n+1=.3n-.2 2) A=P+Prt solve and justify each step. 4) 3|2x+6|=24

Algebra ->  Absolute-value -> SOLUTION: Solve. 1) .2n+1=.3n-.2 2) A=P+Prt solve and justify each step. 4) 3|2x+6|=24      Log On


   

Question 159370: Solve.
1) .2n+1=.3n-.2
2) A=P+Prt
solve and justify each step.
4) 3|2x+6|=24
Answer by edjones(8007) About Me  (Show Source):
You can put this solution on YOUR website!
1)
.3n-.2=.2n+1
.3n-.2n=1+.2
.1n=1.2
n=1.2/.1
=12
.
4)
3|2x+6|=24
|2x+6|=8
2x+6=8
2x=2
x=1
2x+6=-8
2x=-14
x=-7
x=1, x=-8
.
Ed