By your cell phone contract, you pay a monthly fee plus some money for each minute you use the phone during the month. In one month, you spent 230 minutes on the phone, and paid $28.35. In another month, you spent 320 minutes on the phone, and paid $32.40. Let x be the number of minutes you talk over the phone in a month, and let y be your cell phone bill for that month. Use a linear equation to model your monthly bill based on the number of minutes you talk over the phone. a. This linear model's slope-intercept equation is b. If you spent 140 minutes over the phone in a month, you would pay c. If in a month, you paid $40.50 of cell phone bill, you must have spent minutes on the phone in that month.

College Algebra
7th Edition
ISBN:9781305115545
Author:James Stewart, Lothar Redlin, Saleem Watson
Publisher:James Stewart, Lothar Redlin, Saleem Watson
Chapter1: Equations And Graphs
Section1.3: Lines
Problem 92E
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By your cell phone contract, you pay a monthly fee plus some money for each minute you use the phone during the month. In one
month, you spent 230 minutes on the phone, and paid $28.35. In another month, you spent 320 minutes on the phone, and paid
$32.40.
Let x be the number of minutes you talk over the phone in a month, and let y be your cell phone bill for that month. Use a linear
equation to model your monthly bill based on the number of minutes you talk over the phone.
a. This linear model's slope-intercept equation is
b. If you spent 140 minutes over the phone in a month, you would pay
c. If in a month, you paid $40.50 of cell phone bill, you must have spent
minutes on the phone in that month.
Transcribed Image Text:By your cell phone contract, you pay a monthly fee plus some money for each minute you use the phone during the month. In one month, you spent 230 minutes on the phone, and paid $28.35. In another month, you spent 320 minutes on the phone, and paid $32.40. Let x be the number of minutes you talk over the phone in a month, and let y be your cell phone bill for that month. Use a linear equation to model your monthly bill based on the number of minutes you talk over the phone. a. This linear model's slope-intercept equation is b. If you spent 140 minutes over the phone in a month, you would pay c. If in a month, you paid $40.50 of cell phone bill, you must have spent minutes on the phone in that month.
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