Which series of transformations will map the trapezoid onto itself? reflection over the x-axis, then a rotation 180° counterclockwise about the origin
reflection over the y-axis, then a rotation 180° counterclockwise about the origin
reflection over the line y = x, then a rotation 90° counterclockwise about the point (0,2)
O reflection over the line y = 2, then a rotation 90° counterclockwise about the point (0, 2)

If a translation of t-3,-8(x, y) is applied to square abcd what is the y-coordinate of b'? the y-coordinate of is 43 mark this and return save and exit next submit

Find the perimeter of the triangle with vertices  d(3, 4),  e(8, 7), and  f(5, 9). do not round before calculating the perimeter. after calculating the perimeter, round your answer to the nearest tenth.  

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?