1. |b/5|=1 take the equation out of the absolute value
b/5=1
*5 *5 multiply both sides by 5
_____
b=5
2. 2-5|5m-5|=-73 get rid of what's outside the absolute value first
-2 -2 subtract 2 from both sides
____________
-5|5m-5|=-75
÷-5 ÷-5 divide both sides by -5
__________
|5m-5|=15 take the equation out of the absolute value
5m-5=15
+5 +5 add 5 to both sides
_______
5m=20
÷5 ÷5 divide both sides by 5
_____
m=4
3. |7p+4|/8=3
*8 *8 multiply by 8
__________
|7p+4|=25 take out the equation
7p+4=25
-4 -4 subtract 4
_______
7p=20
÷7 ÷7 divide by 7
______
p=20/7
4. 5-8|-2n|=-80
+5 +5 add 5
__________
-8|-2n|=-80
÷-8 ÷-8 divide by -8
________
|-2n|=10 take out equation
-2n=10
÷-2 ÷-2 divide by -2
______
n=-5
that took forever to type lol :^)
20s + 3m = 73
5s + 17m = 197
Eliminate s terms: Multiply second equation by -4, then add to first equation:
-20s - 68m = -788
20s + 3m = 73
—————————-
-65m = -715
m = (-715)/(-65) = 11
20s + 3(11) = 73
20s = 40
s = 2
A movie download costs $11. A song download costs $2
Answer:
You would want to draw the middle (not shaded part) of the graph.
Red is x-y=0
Blue is x+y=8
