There is a 7.5% tax on a $800 kitchen
table set. How much is paid altogether
for the table set?

Through non-collinear points there is exactly one plane.

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?

Need showing work for this problem 56.25 ×25.80