THIS IS TIMED AND IM STUCK ON THIS QUESTION PLS HELP! What is the second step to prove that s pi =2+2^2+2^3+2^x-2(2^x-1)

What is the value of x in the diagram below?

The lengths of nails produced in a factory are normally distributed with a mean of 4.91 centimeters and a standard deviation of 0.05 centimeters. find the two lengths that separate the top 4% and the bottom 4%. these lengths could serve as limits used to identify which nails should be rejected. round your answer to the nearest hundredth, if necessary.

What is the fewest number of full weeks briyana would have to work to have enough money? 8 weeks9 weeks 10 weeks11 weeks