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Find the next number in the sequence

-2,4,-8,16,____
243,-81,27,-9,____
34,-68,136,-272,____

on the first, the sequence alternates signs, and is 2^n. Next term is -32

On the second, divide by three, alternate signs.

Third, alternate signs, double...

thankkss i need helpp on this on.. X of the 35 hours John work this week was paid \$14.00/hour. He was paid \$9/hour for the other hours he worked. He made \$415.00 this week.

x=___________hours

Value= 14x + 9(35-x)
solve for x. You are given value as 415

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