Mathematics, 30.01.2020 19:04 anayamllr11

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

Answers: 2

Show answers

Other questions on the subject: Mathematics

Mathematics, 21.06.2019 14:10, hardwick744

How many real and imaginary solutions does the equation x^2-3x=-2x-7 have?

Answers: 1

continue

Mathematics, 21.06.2019 16:10, deannabrown2293

The box plot shows the number of raisins found in sample boxes from brand c and from brand d. each box weighs the same. what could you infer by comparing the range of the data for each brand? a) a box of raisins from either brand has about 28 raisins. b) the number of raisins in boxes from brand c varies more than boxes from brand d. c) the number of raisins in boxes from brand d varies more than boxes from brand c. d) the number of raisins in boxes from either brand varies about the same.

Answers: 2

continue

Mathematics, 21.06.2019 19:00, joshdunsbuns143

Apool measures 12.3 feet by 16.6 feet. if the longer wall of the pool has a diagonal of 17.8 feet, what is the volume of the pool? (round to nearest tenth)

Answers: 1

continue

Mathematics, 22.06.2019 00:00, Dinojacob

Asunflower was 20 1/2 inches tall. over the next 6 months, it grew to a height of 37 inches tall. what was the average yearly growth rate of the height of the sunflower? ? plz write a proportion to solve i will give you 100 points

Answers: 2

continue

You know the right answer?

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