Which of the following represents an arithmetic sequence?

The temperature rises one degree the first hour, 2 degrees the second hour, 4 degrees the third, and so on.
The temperature rises two degrees the first hour, another two degrees the second hour, and so on.
The temperature rises by one degree the first hour and then falls two degrees the second hour.
The temperature rises and falls at different rates during the day.

Question

Which of the following represents an arithmetic sequence?

The temperature rises one degree the first hour, 2 degrees the second hour, 4 degrees the third, and so on.
The temperature rises two degrees the first hour, another two degrees the second hour, and so on.
The temperature rises by one degree the first hour and then falls two degrees the second hour.
The temperature rises and falls at different rates during the day.

campbell_st · Answer

arithmetic sequences increase or decrease by the same amount everytime

e.g.  5, 8, 11, 14,.... going up by 3

hope it helps

anonymous · Answer

no not really @campbell_st

campbell_st · Answer

ok... so the 1st choice is 

1, 3, 7, ...

the 2nd

2, 4, 6, ...

eliminate the last 2... 

so which one is going up by the and amount each time