The answer is going to be 18 because they if you take away 30 from
48 it gives you 18...
+(-x) = -X
+(-7) = -7
So
6-x+2x-7+2x
Simplifies to
3x-1
So your answer is 3x-1
Hope this helps
Answer: Fatigue level
Step-by-step explanation: Dependent variable refers to the measured or observed variable in an experimental study. The dependent variable is the variable observed or studied in other to make assessment of effects which occurs by varying the independent variable. In the study described above, the self reported fatigue level is measured or recorded while subjecting the participant to varying conditions of noise; white noise and normal noise level, which are the independent variables. The dependent variable, fatigue level is the variable being measured in the experiment by subjecting the participants to the two different traet ment conditions which are the independent variables.
Answer:
The third coice should be your answer. Have a nice day.