Question

1. Which represents the type of sequence: -99, -96, -92, -87, -81, …?

a. both arithmetic and geometric

b. neither arithmetic nor geometric

c. geometric

d. arithmetic
2. A town has a population of 32,000 in the year 2002; 35,200 in the year 2003; 38,720 in the year 2004; and 42,592 in the year 2005. If this pattern continues, what will the population be in the year 2016?

a. 100,430

b. 110,473

c. 121,520

d. 133,672

Answer 1

Please explain! :) I am super confused... :/

Answer 2

well look at the sequence and look for a pattern

Answer 3

like how did -99 get to -96?

Answer 4

i know the numbers went -3, -4, -5, -6, -7, etc... but i don't get what kind of sequence it is.... :/

Answer 5

well it cannot be arithmetic because arithmetic sequences require a common difference which is a constant and the sequence changes from +3 to +4 to +5 so that can't be it :)
and it also cannot be a geometric sequence because there is no common ratio

Answer 6

so the answer would be B) neither arithmetic nor geometric

Answer 7

So would #1 be b. neither arithmetic nor geometric??

Answer 8

yes :D

Answer 9

What about #2?

Answer 10

well lets look for a pattern in the sequence