PLEASE HELP ME AT LEAST UNDERSTAND THIS.
Write the sum using summation notation, assuming the suggested pattern continues.

-9 - 4 + 1 + 6 + ... + 66

Please, explain how to do this, I'm having a hard time with understanding these problems!

Question

PLEASE HELP ME AT LEAST UNDERSTAND THIS.
Write the sum using summation notation, assuming the suggested pattern continues.

-9 - 4 + 1 + 6 + ... + 66 

Please, explain how to do this, I'm having a hard time with understanding these problems!

anonymous · Answer

please please help, i will love you for ever and ever

anonymous · Answer

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anonymous · Answer

hey you, yah you.. I know that you want to help me.

anonymous · Answer

Ok so @telescoper there is a pattern all its asking is to complete it.

anonymous · Answer

what do you have to do to get from -9 to -4. You add 5 to it. -9+5=-4 and when you add -4+5 you get 1 so contine the pattern @telescoper

anonymous · Answer

Okay, so if i continue the pattern, it would look like this: 6+11+16+...+66. How can I transfer this into summation notation. That's the part that I don't understand :(

anonymous · Answer

here are the answer choices. Don't give me the answer, but can you explain how to get an answer?