Question 931891: a cell phone company charges a monthly fee of $35 plus .05 per minute. Another company does NOT charge a monthly fee but charges .25 per minute. For how many minutes is the cost of the plans the same?
Answer by TimothyLamb(4379)   (Show Source):
You can put this solution on YOUR website! y = 0.05x + 35
y = 0.25x
---
equate the costs of the two plans:
0.05x + 35 = 0.25x
0.20x = 35
x = 35/0.20
x = 175
---
answer:
at 175 minutes the costs of the two plans are the same
---
Solve and graph linear equations:
https://sooeet.com/math/linear-equation-solver.php
---
Solve quadratic equations, quadratic formula:
https://sooeet.com/math/quadratic-formula-solver.php
---
Convert fractions, decimals, and percents:
https://sooeet.com/math/fraction-decimal-percent.php
---
Calculate and graph the linear regression of any data set:
https://sooeet.com/math/linear-regression.php
|
|
|
