Answer:
50% of unpolarised light passes through the first filter because, on average, 50% of the waves are aligned with the fiter's axis. Intensity is reduced by a factor 0.5.
The second filter then reduces the intensity by a factor cos²(θ)
Explanation:
The independent variable would be the shirts you are using the dependent variable would be the detergent.
Hope this helps!
This should help you out- http://www.sosmath.com/algebra/logs/log5/log56/log5601/log5601.html
the answer is 8.9 I am pretty sure.
Because gravity accelerates all objects the same regardless of their mass