Algebra 1 (Reiny or Kuai)

Write a rule in function notation for each situation.

1. Airport parking is available for $8 per day

A: f (x) = 8x?

2. A glass of iced tea costs $2.00. Refills cost $0.25 each.

A: ?

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  1. f(x) = 2.00 + .25(x-1)

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  2. p(d) = 8d

    f(t) = 0.2t + 2

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  3. p(d) = 8d

    f(t) = 0..25(t-1) + 2

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  4. 2. Is it not f(r) = 2 + 0.25r?

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  5. No, because you only pay .25 AFTER you buy the first one for 2

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  6. 2+ .25(t-1) it does not make sense to me.

    Because it is per day

    f(d) = 8d

    rate

    F(r) = 2 + .25r

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  7. you pay $2 for the first day
    You do not pay 0.25 on day one
    so your 0.25 per day has to delete day one
    the number of days you pay 0.25 is
    t-1
    so for one day, $ 2 + ZERO
    two days $2 + 1 (.025)
    three days $2 + 2 (.025)
    etc

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