Answer:
37
Step-by-step explanation:
45+98+x=180
Answer:
You need to add more context to the question. I cannot answer it without knowing what "These scales" are.
Answer:
a. 
Step-by-step explanation:
Since f(x) is the function for the populational density at a certain sidewalk for a 5 mile stretch, a definite integral of that function will yield the total number of people within the integration intervals. If we are interested in the number of people in the whole 5 mile stretch, we must integrate f(x) from x = 0 miles to x = 5 miles:

Therefore, the answer is alternative a.
Answer: it is D (1,-5) I think