McKenna L.

asked • 11/10/15

I don't get inequalities

A cell phone plan charges $39.90 a month, plus $0.05 per text message. Which expression can be solved to find how many text messages, x, can be spent while still keeping the monthly bill under $50?
A. 39.9+0.05x>50
B.x(39.9+5x<50
C.39.9+5x<50
D.39.9+0.05x<50
*please help I have a test tomorrow and I need to understand how to get the answer!!!*

1 Expert Answer

By:

David W. answered • 11/10/15

Tutor
4.5 (50)

Experienced Prof

Michael J.

Just to add to David's correct answer.  If you had to solve the inequality, the solution will be a range of positive x values that make the inequality true.  You will not just have one solution as you would in an equation.
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11/10/15

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