Answer:
Step-by-step explanation:
Fixed monthly fee = $20
Amount charged per minute for long distance calls = $0.20
denotes total cost such that 
minutes are used for long distance calls.
Amount charged for minutes for long distance calls 
Therefore, an equation for the total cost, C, when N minutes are used for long distance calls is
60000(0.081)10+60000=$108600
60000(.1)+60000(.0665)(10)+60000=$105900
<span>b. 4+12÷2=4+6=10
c. (20–5)•3=15•3=45</span>
-(z + (-17)) = 12 + 17
-(z - 17) = 12 + 17
Distribute -1:
-z + 17 = 12 + 17
Subtract 17 to both sides:
-z = 12
Multiply -1 to both sides:
z = -12
-8
On the number line you either start at -3 or -5 and you got your answer
