35 definition 7=2 and x=-5
11-a is false, because 10/28 can only be reduced to 5/14. 11-b is false, because 6/12 can be reduced to 1/2 ( 1/2 and 2/4 are equal though, but are not both in simplest form ) Finally, 11-c is true, 2/14 can be reduced to 1/7.
To find F(4), you simply plug 4 in for x. That means multiplying 5 by 1/2x to the 4th power. That comes out to .3125, or D. (5/16)
The 8 exterior angles of a regular octagon add up to 360 degrees
