# 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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