In 2014, the cost to mail a letter was 49 cents for up to one ounce. Every additional ounce cost 21 cents. Which recursive function could be used to determine the cost of a 3-ounce letter, in cents?
A. a₁ = 49; aₓ = aₓ₋₁ + 21
B. a₁ = 0; aₓ = 49aₓ₋₁+21
C. a₁ = 0; aₓ = aₓ₋₁ + 49
D. a₁ = 0; aₓ = 21aₓ₋₁ + 49
(In the answer selection above, I used x's instead of n's because I couldn't find the subscript for n. I don't know if that makes a difference or not.)
(This question is worth 25 points please help...)

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akaleti47 akaleti47 · Answer 1 · 2017-04-22T21:02:29+02:00

A as for 1st ounce, its 49. so a_1 = 49
then others can be found by adding 21 recusively

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shivishivangi1679 shivishivangi1679 · Answer 2 · 2022-05-23T13:33:15+02:00

The recursive function could be used to determine the cost of a 3-ounce letter, in cents is aₓ = aₓ₋₁ + 21

The function is a type of relation, or rule, that maps one input to a specific single output.

In 2014, the cost to mail a letter was 49 cents for up to one ounce. Every additional ounce cost 21 cents.

The recursive function could be used to determine the cost of a 3-ounce letter, in cents is aₓ = aₓ₋₁ + 21

A as for 1st ounce, its 49. so [tex]a_1 = 49[/tex]

Here, others can be found by adding 21 recursively.

Learn more about function here:

https://brainly.com/question/2253924

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