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Hello!
Since Trey pays a flat monthly $6 fee, we can subtract that from the total bill:
$12.27 - $6 = $6.72
That leaves us with a total of $6.72 paid for minutes. We are told that Trey is charged 8 cents per minute of usage. Using the information above, we can create the following equation:
$0.08 x (minutes) = $6.72
Now divide $0.08 from both sides of the equation and simplify:
x (minutes) = 
minutes = 84
We have now proven that Trey was billed for 84 minutes.
I hope this helps!
First one is -8.
Second one, I can't tell because I don't see it
Answer:
4
Step-by-step explanation:
4x +8 = 7x -4
3x = 12
x = 4
pls mark brainiest :)
Answer:
y = -0.525
Step-by-step explanation:
2.2y - y + 7.3 / 10 = 0.1
1.2y + 0.73 = 0.1
1.2y = -0.63
y = -0.525