5. In the diagram below, AB is tangent to circle C at point D and AC is perpendicular to BC. If mA = 28 then which of the following is the measure of DCB
(1) 14
(2) 28
(3) 56
(4) 62

How do i do this activity, is appreciated

Find the equation using the point (4,8)

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?