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Problem 8, January 2017 Algebra I (Common Core) Regents Exam - JuanTutors.com
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In 2014, the cost to mail a letter was 49¢ for up to one ounce. Every additional ounce cost 21¢. Which recursive function could be used to determine the cost of a 3-ounce letter, in cents?
(1) a1 = 49; an = an-1 + 21
(2) a1 = 0; an = 49an-1 + 21
(3) a1 = 21; an = an-1 + 49
(4) a1 = 0; an = 21an-1 + 49
(1) a1 = 49; an = an-1 + 21
(2) a1 = 0; an = 49an-1 + 21
(3) a1 = 21; an = an-1 + 49
(4) a1 = 0; an = 21an-1 + 49
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