E. coli is a type of bacterium. Its concentration, P parts per million (ppm), at a particular beach over a 12-hour period t hours after 6am, is described by the function P= 0.05sin(pi*t/12)+0.1
a) find the miximum and the minimum, E. coli levels at the beach.
b) what is the level at 3pm?
c) how long is the level above 1.125 ppm during the first 12 hours after 6pm?
(just so you know by * i mean the multiplication sign, and by / i mean divide. In the function
help with this will be very appreciated
You are expected to have learned something from the help you were given here http://www.mathhelpforum.com/math-he...-a-161428.html
and here http://www.mathhelpforum.com/math-he...on-161426.html
Please review those threads, go back to the question you have posted, and make an effort and then be specific on where yuo are stuck.
I assume you meant
Draw a graph of P= 0.05sin(pi*t/12)+0.1, from t = 0 (6 am) to t = 12. On the same set of axes, draw the line P = 1.125. Calculate the t-coordinates t1 and t2 of the first two intersection points. Then you should see that the answer is t2 - t1.c) how long is the level above 1.125 ppm during the first 12 hours after 6am?