David increased the amount of protein he eats every day from 35 g to 48 g. By what percentage did David increase the amount of protein he eats? A:13%
B:37.1
C:27.1
D:15.7

Answer with the explanation and if you don’t your getting reported.
Make sure of your answer this is really important.
I’ll give brainliest to the person with best answer and explanation.

Which of the following answers is 7/9 simplified? 7/9 2/9 11/9 2/7

Is the power produced directly proportional to the wind speed, give reasons for your answer?

An automobile assembly line operation has a scheduled mean completion time, μ, of 12 minutes. the standard deviation of completion times is 1.6 minutes. it is claimed that, under new management, the mean completion time has decreased. to test this claim, a random sample of 33 completion times under new management was taken. the sample had a mean of 11.2 minutes. assume that the population is normally distributed. can we support, at the 0.05 level of significance, the claim that the mean completion time has decreased under new management? assume that the standard deviation of completion times has not changed.