A video game has been developed whereby the player must earn a certain number of experience points before progressing to the next level.

On level 1, a player must earn 2 experience points.
On level 2, a player must earn 4 experience points.
On level 3, a player must earn 7 experience points.
On level 4, a player must earn 11 experience points.

Which recursive equation represents the pattern?

an = an – 1 + n

an = an – 1 – n

an = an – 1 + 2n

an = an – 1 – 2n

I just need the answer please.

Question

A video game has been developed whereby the player must earn a certain number of experience points before progressing to the next level.

On level 1, a player must earn 2 experience points. 
On level 2, a player must earn 4 experience points. 
On level 3, a player must earn 7 experience points. 
On level 4, a player must earn 11 experience points.

Which recursive equation represents the pattern?

an = an – 1 + n

an = an – 1 – n

an = an – 1 + 2n

an = an – 1 – 2n

I just need the answer please.

anonymous · Answer

i already answered this for you

this site is for learning, not just answers

anonymous · Answer

Is it A?

anonymous · Answer

It's 2:45am I can't learn at this timeeeeee

primeralph · Answer

Ahhh I can answer this.

anonymous · Answer

answer it ^^

primeralph · Answer

Sorry, I'd like to help, but I'm not allowed to give you the answer.

anonymous · Answer

Then just take it step by step without any interruptions?

anonymous · Answer

I already did this problem for you last time, i'm confused what the confusion is o.0

anonymous · Answer

Your process confused me

e.cociuba · Answer

The answer is A.

You can see by taking the difference between the experience required between two levels is n.

For example exp needed for level 4 - exp needed for level 3 = 11 - 7 = 4.

anonymous · Answer

THANK YOU.

e.cociuba · Answer

Do you understand?

anonymous · Answer

No

anonymous · Answer

Well kinda, but not enough to do it for a different problem...........

goformit100 · Answer

Ya I understood it.

e.cociuba · Answer

Successive differences are 2, 3, 4. 
For example, when n = 2, a(2) = a(1) + 2. 
So that's why ur answer would be A.

anonymous · Answer

A video game has been developed whereby the player must earn a certain number of experience points before progressing to the next level. 

On level 1, a player must earn 1 experience point. 
On level 2, a player must earn 4 experience points. 
On level 3, a player must earn 8 experience points. 
On level 4, a player must earn 13 experience points. 

Which recursive equation represents the pattern?

 an = an – 1 + n

 an = an – 1 + (n + 1)

 an = an – 1 + 2n

 an = an – 1 + (2n + 1)

If it were like this how would you do it?

anonymous · Answer

I answered with C and got it wrong.

anonymous · Answer

Successive differences are 3, 4, and 5

$$a_{n-1} $$is the amount of experience you need to earn from the last level you were on

so if you're on level 2$$a_2 = 4,$$
and $$a_{2-1} = 1$$