SOLUTION: Solve the following problems by writing an expression of inequality
Business and finance. The cost for a long-distance telephone call is $0.36 for the first minute and $0.21 fo
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Business and finance. The cost for a long-distance telephone call is $0.36 for the first minute and $0.21 fo
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Question 86456: Solve the following problems by writing an expression of inequality
Business and finance. The cost for a long-distance telephone call is $0.36 for the first minute and $0.21 for each additional minute or portion thereof. Write an inequality representing the number of minutes a person could talk without exceeding $3. Answer by ankor@dixie-net.com(22740) (Show Source):
You can put this solution on YOUR website! Solve the following problems by writing an expression of inequality
The cost for a long-distance telephone call is $0.36 for the first minute and $0.21 for each additional minute or portion thereof. Write an inequality representing the number of minutes a person could talk without exceeding $3.
:
Let x = number of minutes a person can talk without exceeding $3
:
1st min cost + additional min cost =< $3
.36 + .21(x-1) =< 3
.36 + .21x - .21 =< 3
.21x + .15 =< 3
.21x =< 3.00 - .15
.21x =< 2.85
x =< 2.85/.21
x =< 13.57 however has to be rounded down
x =< 13 min
