Question

A bungee jumper falls 97.2 feet before bouncing back up at the end of his bungee cord. Then he falls 64.8 feet before bouncing up again. On his third descent, he falls 43.2 feet before going back up. What is the total distance the bungee jumper drops after five falls if the distances continue in this pattern? (Do not include the distance traveled up.)
a. 234.0 ft
b. 253.2 ft
c. 789.8 ft
d. 1,281.8 ft

Answer 1

hmm, what models the pattern best? what type of sequence?

Answer 2

@Sam-I-Am

Answer 3

Geometric sequence so lets cheeck it just to make sure,

if its geometric, then we have a common ratio

97.2/64.8 = 64.8/43.2
so we know our r value


You with me

@Sam-I-Am

Answer 4

ok

Answer 5

given a starting value a1, and a common ratio , r

we can use the formula Sn=a1 1-rn
1-r

Answer 6

You with me??

Answer 7

define the varaibles for me: a1, r and n

Answer 8

@Sam-I-Am

Answer 9

I don't understand