Each day that a library book is kept past its due date, a $0.30 fee is charged at midnight. Which ordered pair is viable solution if x

Question

Each day that a library book is kept past its due date, a $0.30 fee is charged at midnight. Which ordered pair is
viable solution if x represents the number of days that a library book is late and y represents the total fee?

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Thành Công 5 months 2021-08-25T18:04:56+00:00 1 Answers 252 views 0

Answers ( )

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    2021-08-25T18:06:45+00:00

    Let’s say the number of days library book is late is X, and the total fee is Y.

    Liability charges $0.30 dollars as a fee for being 1 day late,

    For being 1 day late, fee charge is: 1* $0.30
    So, for X days the charge would be: X*$0.30.

    Total charge for being X days late is Y, Which means: Y= 0.30 * X.

    Now We would have to check all the viable solutions in the answer to see if they satisfy the equation Y= 0.30 * X

    Option one(-3, -0.9) and two (-2.5, -0.75) Would not be a viable solution because the value of number of days can not be negative and in option one and two, value of days -3 and -2.5 is negative.

    Option three(4.5, 1.35) can not be correct because library charges fee for a full day so the number for days would be a whole number. Library would not charge for 4.5 days, they would either charge of 4 days or 5 days because 4.5 is not an whole number.

    Option four(8, 2.40) is the correct answer because it satisfies our equation;

    Y= 0.30 * X

    2.40= 0.30 * 8

    2.40 = 2.40.

    Fourth option (8, 2.40) is the only viable solution to this question.

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