1 kg*m/s2
Newtons are measures in units of kg*m/s2
It is given that the weight of the barbel is given by:

It says that there are eight pair of weights so x can take values from 0 to 8 and f(x) can take the values as follows:

So the range is:

Option B is correct.
Answer:
Domain: All Real Numbers
Range: y<0
Step-by-step explanation:
Looking at the graph, you can tell that the variable y has a lower point.
( I'm not sure how accurate this is I'm doing the same test right now. ;-;)
Both of the other angles are 40° because a triangle has a total angle of 180° and an isosceles triangle means that at least two of the sides have to be the same length (two angles must be the same)
180 - 100= 80
80 ÷ 2 = 40