Posted by deadlove on Wednesday, February 1, 2012 at 1:29am.
Randy had a sheep that started eating more and more as each day passed. On July 1,
Randy’s sheep ate 5 carrots. On July 2, Randy’s sheep ate 11 carrots. On July 3, the sheep ate 18 carrots. How many carrots will the hungry sheep eat on July 30th?

Math 543 HELP!!  drwls, Wednesday, February 1, 2012 at 8:06am
July 2: 5
July 3: 11
July 4: 18
July 5: 26
July 6: 35
July 7: 45
July n: 5 + 6 +.. + (n+3)
= 4(n1) + 1 + 2 +...+ (n1)
= 4(n1) + (n1)n/2
July 30 = 4*29 + 30*29/2 = 551

Math 543 HELP!!  Steve, Wednesday, February 1, 2012 at 4:28pm
Looks like you're one day off. On July 1 the sheep ate 5 carrots.
on July nth, the sheep eats n(n+9)/2 carrots.
On July 30, that's 30(39)/2 = 15*39 = 585 carrots
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