Miscellaneous_Word_Problems/88092: How Can I Translate the following statements into inequalities.
and use x to represent please help?
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 1 solutions Answer 73961 by jenna1026(3) on 2007-10-01 21:13:50 (Show Source):
You can put this solution on YOUR website! cost = 0.36 + 0.21(min-1)
3 > .36 + .21m - .21
3 > .15 + .21m
Subtract .15:
2.85 > .21m
13.57 > m
Equations/96438: Sam must have an average of 70 or more in his summer course to obtain a grade of C. His first three test grades were 75, 63, and 68. Write an inequality representing the score that Sam must get on the last test to get a C grade. 1 solutions Answer 73959 by jenna1026(3) on 2007-10-01 21:04:49 (Show Source):
You can put this solution on YOUR website! average = (score1+score2+score3+score4)/4
We need average to be 70 or more:
70 <= (75+63+68+s)/4
70 <= (206+s)/4
Distribute:
70 <= 51.5 + s/4
Subtract 51.5:
18.5 <= s/4
Multiply by 4:
74 <= s
Check:
(75+63+68+74)/4 = 70
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on 2007-10-01 21:13:50 (