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suppose that the charges for a cell phone bill are $0.50 for the first minute and $0.25 for each additional minute. assume that a fraction of a minute is rounded up. how do i find a formula for a function "f" that computes the cost of a call that is "x" minutes long, where 0 < x <= 5? but writing it in a piecewise-constant fuction?

an explanation would be greatly appreciated and thanks for the help

2006-09-20 13:18:32 · 4 answers · asked by shih rips 6 in Science & Mathematics Mathematics

4 answers

f(x)={$0.50 if 0 < x ≤ 1
$0.75 if 1 < x ≤ 2
$1.00 if 2 < x ≤ 3
$1.25 if 3 < x ≤ 4
$1.50 if 4 < x ≤ 5}

2006-09-20 13:22:45 · answer #1 · answered by Pascal 7 · 0 0

If the scholars present day grade is a ninety% then we’re of course assuming it’s out of one hundred% ninety/one hundred Now because of the fact the scholars grade better 20% from the final grading era then you somewhat upload that to the previous one hundred% imparting you with ninety/ one hundred twenty = .seventy 5 and because grades are in possibilities you multiply .seventy 5 by using one hundred imparting you with seventy 5% because of the fact the scholars previous grade

2016-12-12 11:58:05 · answer #2 · answered by ? 4 · 0 0

oooh, I remember doing these in 8th grade with our crazy photographer math teacher. But I had to figure them out myself, and belive me, its better if u do.

2006-09-20 13:21:00 · answer #3 · answered by Ty 2 · 0 2

try doing it yourself.

2006-09-20 13:23:18 · answer #4 · answered by soar_2307 7 · 0 1

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