Hi there
Paul get after the rise
8+8×0.07=8.56 per hour
Sandy get after the rise
11,100+11,100×0.07=11,877
Good luck!
Barbara’s hourly rate is six dollars an hour
I can’t find the question with the attachment on it when did you posted it?
According to the empirical rule, approximately 68% of data fall within 1 standard deviation of the mean.
Your answers for (a) and (c) are correct.
(b) Salt flows into the tank at a rate of
If is the amount of salt (in kg) in the tank at time (in min), then the salt flows out of the tank at a rate of
The net rate of change in the amount of salt in the tank at any time is then governed by the linear differential equation
I'll solve this with the integrating factor method. The I.F. is
Distributing on both sides of the ODE gives
Integrate both sides.
Given that , we find
so that
Then the amount of salt in the tank after 1 hr = 60 min is