A child is creating a pyramid with building blocks. The top three levels include 3 blocks, 7 blocks, and 11 blocks.

Part 1: How many blocks would be needed for a pyramid 25 levels tall? (5 points)

Part 2: Use complete sentences to explain how a sum of an arithmetic series was applied. (4 points)

Question

A child is creating a pyramid with building blocks. The top three levels include 3 blocks, 7 blocks, and 11 blocks. 

Part 1: How many blocks would be needed for a pyramid 25 levels tall? (5 points) 

Part 2: Use complete sentences to explain how a sum of an arithmetic series was applied. (4 points)

jdoe0001 · Answer

how many blocks are being added EXTRA on those subsequent 2 levels?

anonymous · Answer

really, i don't know. that was a question i was asked and had no idea how to do it...

jdoe0001 · Answer

well, look at the numbers

anonymous · Answer

oh 21

jdoe0001 · Answer

the top level is 3 blocks only
the level below that, is 7 blocks
the one below that one is 11 blocks

how many MORE are being added?

anonymous · Answer

its subtracting 4 the higher it gets

jdoe0001 · Answer

well, let's see |dw:1373746552789:dw|