Cell Phone Costs A cell phone company charges a monthlyfee of $10 for the first 1000 text messages and 10 cents foreach additional text message. Miriam’s bill for text messagesfor the month of June is $38.50. How many text messagesdid she send that month?

Cell Phone Costs A cell phone company charges a monthlyfee of $10 for the first 1000 text messages and 10 cents foreach additional text message. Miriam’s bill for text messagesfor the month of June is $38.50. How many text messagesdid she send that month?

College Algebra

7th Edition

ISBN:9781305115545

Author:James Stewart, Lothar Redlin, Saleem Watson

Publisher:James Stewart, Lothar Redlin, Saleem Watson

ChapterP: Prerequisites

SectionP.9: Modeling With Equations

Problem 22E

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Concept explainers

Equations and Inequations

Equations and inequalities describe the relationship between two mathematical expressions.

Linear Functions

A linear function can just be a constant, or it can be the constant multiplied with the variable like x or y. If the variables are of the form, x2, x1/2 or y2 it is not linear. The exponent over the variables should always be 1.

Question

Cell Phone Costs A cell phone company charges a monthly
fee of $10 for the first 1000 text messages and 10 cents for
each additional text message. Miriam’s bill for text messages
for the month of June is $38.50. How many text messages
did she send that month?

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