<span>150 degrees.
Let's assume the center camera is pointed to at an angle of 0 degrees. Since it has a coverage of 60 degrees, then it will cover the angles from -30 to +30 degrees. Now we'll continue to use the +/- 30 degree coverage for the other two cameras. The second camera is aimed at 45 degrees, so it's range of coverage is 15 degrees to 75 degrees (45 +/- 30). Notice that the range from 15 degrees to 30 degrees is covered by 2 cameras. Now the 3rd camera is pointed at -45 degrees, so its coverage is from -15 degrees to -75 degrees. It also has an overlap with the 1st camera from -15 to -30 degrees.
The total coverage of all three cameras ranges from -75 degrees to 75 degrees. That means that an arc of 150 degrees in total is covered by all three cameras.</span>
199.
the z score for the 90th percentile is 1.28, so you can solve the equation

which gets you the 199
The preimage was shifted to the image by a translation 2 units right and 2 units up, so the answer is 
Answer: 0.838 is the answer to this problem
Because 1.000 - .162= 0.838
C.25 because 11-6 is five 13-8 is five and 15-10 is five so 25-20 is five