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2 years ago

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Jessica purchased a 600-minute pre-paid phone card and called her sister at college. After talking to her sister "t" minutes, sh

e had less than 600 minutes on her calling card. (a) Write an equation to determine the number of minutes remaining on the card. (b) Now, suppose she talked to her sister for 65 minutes, determine how many minutes she has left on her card.

1 answer:

Vesna [10]2 years ago

6 0

Answer:

1) 600-t

2) 600-t=65

=>t=535

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EXPLANATION

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We can solve simultaneous equations by various methods. here we will solve it by elimination method.

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<u>NOTE</u> : The question given here is not complete. The complete question is given below.

Question: What is the solution of the simultaneous equations 3x- 2y= 14 and 4x+ 3y= 13?.

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