"the argument" of a function, is simply "the expression being evaluated by that function".
Answer: The first option is correct.
Explanation:
The given piecewise function is,

From the piecewise function we can say that if x<0, then

If
, then

Since the f(x) is defined for x<0 and
, therefore the function f(x) is not defined for
.
In the graph 2, 3 and 4 for each value of x there exist a unique value of y, therefore the function is defined for all values of x, which is not true according to the given piecewise function.
Only in figure the value of y not exist when x lies between 0 to 2, including 0. It means the function is not defined for
, hence the first option is correct.
1.3/4 of right angle is 3/4*90=67.5
2.5/4 of right angle is 5/4*90=112.5
3.5/3 of right angle is 5/3*90=150
4.2/3 of right angle is 2/3*90=60
Mark earns 33.5 dollars per hour.
372 is the answer.
(9*6*3)+(10*7*3)=372