SOLUTION: A long-distance phone call costs $0.96 for the first minute and $0.72 for each additional minute or portion thereof. Write an inequality representing the number of minutes a perso

Algebra ->  Graphs -> SOLUTION: A long-distance phone call costs $0.96 for the first minute and $0.72 for each additional minute or portion thereof. Write an inequality representing the number of minutes a perso      Log On


   

Question 55141: A long-distance phone call costs $0.96 for the first minute and $0.72 for each additional minute or portion thereof. Write an inequality representing the number of minutes a person could talk without exceeding $6.
Please,
Thank you :)
Answer by Hook(36) About Me  (Show Source):
You can put this solution on YOUR website!
$0.96 the first minute and $0.72 thereafter! What kind of 1-900 number is this! Whatever...on to the math.
Let's say that f%28t%29 is a function that states the cost of this phone call after t minutes.
t is the number of minutes you've been on the phone. Let's figure out what f%28t%29 should be.
Well, we know that just picking up the phone costs us $0.96. After the first minute, we pay $.72 per minute.
Ok...in mathspeak, thats:
f%28t%29=0.96+%2B+0.72t
We want f%28t%29%3C=6 so lets do that:
0.96%2B0.72t%3C=6
Ok...I think we've done what we're asked.