Me. i need your .
emma's yard needs some work, so she decides to hire a landscaper. the garden expert charges a $50 consultation fee plus $36 per hour for the actual work. after working for x hours emma owed the garden expert $212.

which equation symbolizes the above situation, and how many hours did the landscapers work?

a) $50 - $36x = $212; 4 hours
b) $50 + $36x = $212; 4.5 hours
c ) $50x + $36 = $212; 3.52 hours
d) $212 + $50 = $36x; 7.28 hours

Add or subtract polynomial : –12qr? +13rq?

Farnesene is a sesquiterpene. how many different isomers arising from double-bond isomerizations are possible? g

Amachine that produces a special type of transistor (a component of computers) has a 2% defective rate. the production is considered a random process where each transistor is independent of the others. (a) what is the probability that the 10th transistor produced is the first with a defect? (b) what is the probability that the machine produces no defective transistors in a batch of 100? (c) on average, how many transistors would you expect to be produced before the first with a defect? what is the standard deviation? (d) another machine that also produces transistors has a 5% defective rate where each transistor is produced independent of the others. on average how many transistors would you expect to be produced with this machine before the first with a defect? what is the standard deviation? (e) based on your answers to parts (c) and (d), how does increasing the probability of an event a↵ect the mean and standard deviation of the wait time until success?