Algebra 2

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A photocopying machine purchased new for $4500 loses $900 in value a each year.
a. Find the book value of the machine after 18 months.
b. When will the book value be $1200?

Assume that each situation can be decribed as a linear equation

HELP!!! I don't know how to set this up but I know the answer

  • Algebra 2 -

    Value = 4500 - 900t, where t is the number of years

    a) 18 months ---> t = 1.5
    value = 4500 - 1.5(900) = 3150

    b)
    solve
    1200 = 4500 - 900t

  • Algebra 2 -

    the charge for a one day rental of a car from Hawks car rental agency is $24 plus 15 cents for each mile driven.
    a) If sarah drives 85 miles in one day, how much is the charge?
    b) If a one day rental cost Sarah $42, how far did she drive?

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