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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...)

Respuesta :

akaleti47
A as for 1st ounce, its 49. so a_1 = 49
then others can be found by adding 21 recusively

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

What is a function?

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

#SPJ2

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