HELP

Simplify. 4+3/7x-2-2/7x a. 2-5/7x b. 6-1/7x c. 2+1/7x d. 6+5/7x

Have yall ever just farted and was like, i farted.

Select the margin of error that corresponds to the sample mean that corresponds to each population: a population mean of 0.45, a standard deviation of 0.001, and margin of error of 0.5% a)0.44 b)0.46 c)0.45