Mathematics, 07.07.2019 05:10 Adolfosbaby
Marcos purchases a top-up card for his pre-paid cell phone. his remaining balance, b, can be modeled by the equation b=40−0.1n, where n is the number of minutes he's talked since purchasing the card.
a) how much money was on the card when he purchased it? $ which intercept is this? b-intercept or n-intercept?
b) how many minutes will he have talked when he runs out of money? $ which intercept is this? b-intercept or n-intercept ?
c) what is the slope of this . what are the units on the slope? minute , dollars per minute ,minutes per dollars or dollars ?
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Marcos purchases a top-up card for his pre-paid cell phone. his remaining balance, b, can be modeled...
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