Question

Evaluate the summation of 2 times negative 2 to the n minus 1 power, from n equals 1 to 7..

−256
−84
84
86

Answer 1

c

Answer 2

for sure

Answer 3

i think e.e

Answer 4

no direct answer

Answer 5

..............

Answer 6

lol

Answer 7

subtract the exponent first, then raise the two the exponent, then multiply it by 2. You'll get 86

Answer 8

86

Answer 9

86

Answer 10

86. I answered first