Answer: 
Step-by-step explanation:
Given the functions f(x) and g(x), to find
you need to substitute
into the function g(x):

Now, to find
you must substitute
into
, then you get:

3S+5A≥1000
3(200)+5A≥1000
600+5A≥1000
-600 -600
5A≥400
-----------
5
A≥80
so 80 adults
Answer: x axis is time in hours, y axis is water level in centimeters
I can't see the rest of the problem since you didnt show it
Step-by-step explanation:
Im no expert but i think its
input: x,independent variable ,domain
output: y, dependent variable , range
extra: f(x) , discrete, and slope