For Items A and B, use this data set of the price, in dollars, of a milkshake at five different restaurants: 7, 4, 9, 2, 6, 8. If necessary, round your answer to the nearest tenth of a unit. Decimal answers must round to tenth place. A. Find the mean absolute deviation.

B. Find the standard deviation.

For the quadratic function [tex]y=(x+4)^2-1[/tex] , do the following: a) rewrite the function in the standard form, b) rewrite the function in intercept form, c) find the vertex, d) find the y-intercept, e) find the x-intercepts.

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?

(x-5)1/2+5=2 what is possible solution of this equation