Indoor air pollution like outdoor air pollution is both man-made and found in the natural environment. In what way can someone prevent radon from entering their home?
A) Radon gets inside through basement cracks, seal them.
B Radon gets inside during wet rainy seasons, keep windows closed and humidity out.
C Radon gets inside during high pollution days, close windows and doors.
D Radon is not harmful inside the house, it is more harmful outside.
E) Radon is found underground and should not escape unless you build a basement.

Dis the correct answer man

The answer is    (d) 7/2======we have    we also  have an integral      notice how function f splits up at x = 0. there's a left piece and a right pieceso we'll need to do the same thing with our integral: split it at x = 0we use a property of integrals that allows us to split up and sum:     notice that for the piecewise function f, the function has the equationf(x) = x when x  ≤ 0. so for the integral  , f(x) = x so it changes into      for the piecewise function f, the function has the equationf(x) = x+1  when x  > 0. for the integral  , we have    therefore, back to our splitted integral:    

Dhope it