The Equation C=mx+b Can Be Used To Model The Monthly Cost, C, Of A Cell Phone Plan Where B Is The Flat Monthly Cost, M Represents The Cost In Dollars Per Minute And X Is The Number, Can You Help?

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Quite simple'  let m = $0.02  let b = $2  and we have x = 68 min.    Therefore monthly cost C would be:    C=mx+b    C=0.02(68)+2    C=1.36+2    C=3.36  i.e C is equal to $3.36
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The equation C=mx+b can be used to model the monthly cost, C, of a cell phone plan where b is the flat monthly cost, m represents the cost in dollars per minute and x is the number of minutes used in the month. Choose a flat monthly rate and cost per minute and insert the values you have chosen for m and b into the equation. Then use this equation to find the total monthly cost, C, if 82 minutes are used.

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