algebra 1, help please

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Xcnvtr28

Mathematics

Description

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?

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Explanation & Answer

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!


Anonymous
I was having a hard time with this subject, and this was a great help.

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