16) B
17) B
Step-by-step explanation:
16)
Domain is the largestest and smallest x values your graph can reach
Since your graph ends at the points (1,4) and (6,4) those x values are the domain; 1≤x≤6
Range is the largest and smallest y values your graph can reach. The highest part of your graph is (2,1) and (4,7) which means those y values are the range; 1≤x≤7
17)
(f°g)(x) just means that for the x values in the f(x) equation you will insert the g(x) equation;
(f°g)(x)=(1/x-2) / (1/x-2)+1
To find the domain of a fraction the numerator or denominator must not equal 0 because then the whole fraction equals 0 and you can't take 0 parts of something so it doesn't exist.
So for g(x) the fraction is; 1/x-2
x cannot equal +2 or the fraction will be dividing by 0 and that can't happen
For f(x) the fraction is; x/x+1
x cannot equal -1 or the fraction will be dividing by 0 and that can't happen
I hope this helps!