A) briefly discuss the main causes for recent trends in union membership rates in the united states. b) do countries with a higher percentage of unionized workers usually have less growth in productivity because of strikes and other disruptions caused by the unions? elucidate.

What is the range? can’t seem to find it out

The management of a supermarket wants to adopt a new promotional policy of giving a free gift to every customer who spends more than a certain amount per visit at this supermarket. the expectation of the management is that after this promotional policy is advertised, the expenditures for all customers at this supermarket will be normally distributed with a mean of $95 and a standard deviation of $20. if the management wants to give free gifts to at most 10% of the customers, what should the amount be above which a customer would receive a free gift?

Which number line correctly shows 0.8 + 0.3?