algebra 1, help please

Algebra
Tutor: None Selected Time limit: 1 Day

a cell phone plan includes 450 anytime minutes for $35 per month plus $13.85 for a cell phone and $25 for a activation fee. let x represent the number of months of service. write an equation in the form of y=mx+b. find the ordered pair associated with the equation x=5. if you sign a 1-yr contract, how much will this cell phone package cost?
Sep 30th, 2015

Thank you for the opportunity to help you with your question!

You should think about how this works in real life. You have to start off by paying $13.85 AND $25 right off the bat. Then, you pay $35 per month, so you would have to multiply the $35 by the number of months you are getting service. So that means that the 35 gets multiplied by the x. The y-intercept would be the $13.85 and the $25 added together, which is $38.85.

So, the equation would look like this: y = 35x + 38.85

To find the ordered pair associated with x=5, you need to plug in 5 for x:

y = 35x + 38.85

y = 35(5) + 38.85

y = 175 + 38.85

y = 213.85

The ordered pair would be (5, 213.85). What it means is that you would have paid $213.85 total for 5 months of service.

If you want to know how much it costs for a 1 year contract, you need to think about how many months that is. It's 12 months. So that's what you plug in for x.

y = 35x + 38.85

y = 35(12) + 38.85

y = 420 + 38.85

y = 458.85

For a 1-year contract, the plan costs $458.85.


I hope this helps you move forward on the problem! Let me know if you need any more clarification!
Sep 30th, 2015

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Sep 30th, 2015
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Sep 30th, 2015
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