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inequalities

a cell phone company has offered you two different rates. The first rate is $35 per month and 5 cents per phone call (time does not matter). The second offer is $55 per month and 2 cents per call. Set up the inequality to model this problem and find where it is less expensive to go with the second plan.
asked Feb 20, 2011 in Algebra 1 Answers by supemom1 (280 points)


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35 Answers

first scheme's cost is 35+0.05t (where t is number of calls)

second is 55 + 0.02t

for second plan to be less expensive

it's 55 + 0.02t < 35 + 0.05 t

or  0.03t > 20

t > 666

in other words, if you make more than 666 calls the second plan will cost you less
answered Mar 7, 2011 by HenryYang Level 3 User (2,140 points)

What are the steps of the order of operations? Why is it important that you follow the steps rather than solve the problem from left to right?

 

- Write an expression for your classmates to simplify using at least three of the following:

o Groupings: Parenthesis, brackets, or braces
o Exponents
o Multiplication or division
o Addition or subtraction

 

- Consider participating in the discussion by simplifying a classmate’s expression, showing how the expression would be incorrectly simplified if computed from left to right, or challenging the class with a complicated expression. Respond to your initial post and provide your classmates with the answer to your expression. 

 

answered Feb 8, 2012 by anonymous
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answered Feb 8, 2012 by anonymous
(8,-12)

y-11>2y-3
answered Apr 20, 2012 by anonymous

which value are solutions to the inequality of √x<12 ?

 

answered Apr 23, 2012 by anonymous

 Which values are solutions to the inequality  < 10

answered Apr 24, 2012 by anonymous
How to solve this inequality problem and graph on number line c + 4 > -6

                                                                                                             -
answered May 3, 2012 by anonymous
3x^2-14x+8>0
answered May 20, 2012 by anonymous
Is there any book out there that has a very good solution to the famous :Triangle inequality solutions?
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lim     (h-a)^6+a^6/h

h→0
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your mommy!! :)
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make it easier because i don`t know how to solve
answered Dec 12, 2012 by anonymous

What is the graph of the inequality? x –3

answered Apr 5, 2013 by anonymous
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answered Aug 19, 2013 by anonymous
what is 8-5(x+3)=-2
answered Oct 2, 2013 by robert

-20<5y

 

answered Oct 14, 2013 by sofia
What is the solution set for the given inequality if the replacement set for r is {5, 6, 7, 8, 9, 10}?

5r < 6r -8
answered Oct 29, 2013 by anonymous
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answered Nov 17, 2013 by dick btohpinktoktn
luke
answered Nov 18, 2013 by anonymous

graph of the inequality y > |2x + 1|.

answered Nov 25, 2013 by anonymous
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answered Jan 19, 2014 by anonymous

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answered Mar 8, 2014 by Beauty

f+g = (x - 4) + (x2 - y)

answered Mar 14, 2014 by edgarmorgia
m+5/8 +m+2/3
answered Mar 27, 2014 by divine
lg x - lg(x+1)>0
answered Jul 24, 2014 by krisna
-17-2r<3(r+1)
answered Aug 24, 2014 by anonymous
how to do this
answered Sep 3, 2014 by tiana
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answered Sep 16, 2014 by rishi
Prove inequalities

a/b + b/a >=2
answered Sep 24, 2014 by Xhejsi
I need your help. How to simplify expressions containing exponents of 4. (3/4) exponent 3 and time 4/7 exponent 2?
answered Oct 24, 2014 by La V
I go with the free option
answered Oct 24, 2014 by anonymous

hi im 14 years old and im having trouple whit my homeworks pls help and i also have a test tmmrw please help!!sadplease!e

answered Nov 17, 2014 by anonymous

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