The fibonacci sequence is f(n) = f(n – 1) + f(n – 2). if f(6) = 8 and f(7) = 13, which of the following is true? a. f(8) = 19 b. f(13) = 21 c. f(8) = 21 d. f(5) = 3

C. F(8) = 21

Step-by-step explanation:

Given F(n) = F(n-1) + F(n-2), F(6) = 8 and F(7) = 13.

F(8) = F(7) + F(6) = 13 + 8 = 21

F(13) is way larger than 21, so answer B is wrong.

F(5) = 3 - if you went back, you'd get F(7) = F(6) + F(5), so F(5) = F(7) - F(6) = 13 - 8 = 5, which means D is also wrong.

C. F(8) = 21

Given F(n) = F(n-1) + F(n-2), F(6) = 8 and F(7) = 13.

F(8) = F(7) + F(6) = 13 + 8 = 21

F(13) is way larger than 21, so answer B is wrong.

F(5) = 3 - if you went back, you'd get F(7) = F(6) + F(5), so F(5) = F(7) - F(6) = 13 - 8 = 5, which means D is also wrong.

13

step-by-step explanation:

divide the cost of the total of sodas you bought by the cost of one soda, for example:

$24.57 divided by $1.89 is 13 which means you bought 13 sodas