When i write my expression in rational exponent form, what is the fraction that goes with the base of 10?

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?

What is the point slope form of a line with slope -5 that contains point (2,-1)

Identify the parent function that can be used to graph the function f(x)=3(x-9)2