Hello what is the equation i got the height but what’s the equation i’m stuck plz

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?

Using only odd number for numerators write two different subtraction problems that have a difference of 3/4

The distance between two points is 6.5cm and scale of map is 1: 1000 what's the distance between the two points