B. Keep cords and hoses away from heat, oil, and sharp objects.
You never carry an object by the cord no matter what the conditions are so that's why A and C are wrong
Firstly simplify both sides
using distributive terms
(-8)(2)+(-8)(-3w)+-5w
=-16+24w+-5w
combine like terms
-16+24w+-5w
=(24w+5w)+(-16)
=19w+-16
the answer is 19w+ -16
The probability that the the sample mean would be less than x=132.25 will be calculated as follows:
z=(x-σ)/μ
μ- mean
σ- standard deviation
z=(132.25-138)/28=-0.2054
thus:
P(X≤x)=0.4207=42.07%