A telephone calling card allows for 25 cents per minute plus a one-time service charge of 75 cents. If the total cost of the card is $5.00, or 500 cents, solve 25m + 75 = 500 to find the number of minutes you can use the card.

Question

anonymous · Answer

these are the answer choices 
a.
18 min
c.
20 min
b.
17 min
d.
25 min

anonymous · Answer

First you would -75 from both sides. 
Making the equation. 25m = 425
Then you would divide both sides by 25, 
which would get you....
m = 17       
(Answer b.)