Question

HELPPPP me pleaseeeee

Answer 1

-2077 is the answer

Answer 2

`-2077`

Explanation:

`i=1(-3-4)=-7(first)`

`i=2(-3-4*2)=-11`

`i=3(-3-4*3)=-15`

`i=31(-3-4*31)=-127(last)`

Difference= -11-(-7)= -4

`sum=(n)/(2)`

`= (31)/(2)[-7+(-127)]`

`=(31)/(2)*(-134)`

`=31*(-67)`

`= -2077`

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hope it helps..

have a great day!!