The phone company, Splint, has a monthly cellular plan where the customer pays a flat monthly fee and then a cost of money per minute used on the phone. If the customer uses 330 minutes, the monthly cost is $106.50. If the customer uses 570 minutes, the monthly cost is $166.50. a. Find a linear model of the form y=mx+b, where x is the number of monthly minutes used, and y is the total monthly cost of the Splint plan. y=    b. Using the equation from part a., find the total monthly cost if 823 minutes are used.

College Algebra
10th Edition
ISBN:9781337282291
Author:Ron Larson
Publisher:Ron Larson
Chapter1: Equations, Inequalities, And Mathematical Modeling
Section1.2: Linear Equations In One Variable
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The phone company, Splint, has a monthly cellular plan where the customer pays a flat monthly fee and then a cost of money per minute used on the phone. If the customer uses 330 minutes, the monthly cost is $106.50. If the customer uses 570 minutes, the monthly cost is $166.50.

a. Find a linear model of the form y=mx+b, where x is the number of monthly minutes used, and y is the total monthly cost of the Splint plan.

y= 
 

b. Using the equation from part a., find the total monthly cost if 823 minutes are used.

If 823 minutes are used, the total cost will be___________dollars.

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