Acircular pond is modeled by the equation x^2 + y^2= 225. a bridge over the pond is modeled by a segment of the equation x – 7y = –75. what are the coordinates of the points where the bridge meets the edge of the pond?
a (9, 12) and (–12, 9)
b (9, 12) and (12, 9)
c (9, –12) and (–12, –9)
d (–9, 12) and (12, –9)

The thickness of photoresist applied to wafers in semiconductor manufacturing at a particular location on the wafer is uniformly distributed between 0.2070 and 0.2171 micrometers.(a) determine the proportion of wafers that exceeds 0.2125 micrometers of photoresist thickness. (round your answer to 3 decimal places.)enter your answer in accordance to the item a) of the question statement(b) determine the mean of x. (round your answer to 4 decimal places.)enter your answer in accordance to the item b) of the question statement micrometers(c) determine the variance of x. (round your answer to 8 decimal places.)enter your answer in accordance to the item c) of the question statement micrometers2