<PRE><B>Question 86456</B>
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 =&lt; $3
.36 + .21(x-1) =&lt; 3
.36 + .21x - .21 =&lt; 3
.21x + .15 =&lt; 3
.21x =&lt; 3.00 - .15
.21x =&lt; 2.85
x =&lt; 2.85/.21
x =&lt; 13.57 however has to be rounded down
x =&lt; 13 min</PRE>