Answer:
Chose forth and fifth answer
What is the equation? F(x) is y
(46.6 -47)/4 = -1
(47.4-47)/4 = 1
So, +/- 1 std, that is 95% So, (D)!
1. 1,5 divided by 2 is 0,75 so on the right side its 0,75
2. We make x/8 = 0,75 | *8
so we get: x = 0,75 * 8
which is the same as x = 6
so the answer is x = 6