Asked by Fred
Help Please.
A wireless phone company offers two plans. In one plan, there is a monthly fee of $40 and a charge of $0.25 per minute. In the other plan, there is monthly fee of $25 and a charge of $0.40 per minute. For what number of minutes are the costs equal?
A wireless phone company offers two plans. In one plan, there is a monthly fee of $40 and a charge of $0.25 per minute. In the other plan, there is monthly fee of $25 and a charge of $0.40 per minute. For what number of minutes are the costs equal?
Answers
Answered by
Alex
In order, these equations are:
1) .25x + 40
2) .40x + 25
Where the charge per minute is the slope, the flat rate the y-intercept.
We want to know for what number of minutes these two plans cost the same, so set equations (1) and (2) equal to each other and solve for x.
1) .25x + 40
2) .40x + 25
Where the charge per minute is the slope, the flat rate the y-intercept.
We want to know for what number of minutes these two plans cost the same, so set equations (1) and (2) equal to each other and solve for x.
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