Triangle PQR with vertices P(-2,3), Q(2,4), and R(1,-1) in the line x=-3

Melody received $140 at the end of a certain week. how many customers did she advise that week?

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

The value of 3^4 + 5 times 5 answer ! 50 points whoever answers correctly