B. domain: {-1, 0, 1}, range: {1,2,3}
109. C. because you add up those numbers for the second flight and get 2341, subtract that from 2786 and get 445
110. A. add 784 to 524002 then subtract 2335 from that number
111. B. add 856 and 76
Divide 1515 by 55 then multiply by 88 and you get 2424
Let them be X and Y..
now...
yx=100 ....
y=100/y ...
now...
x+y= s....where s is their sum...
but y=100/x
now....x+100/x=s..
by differentiating both sides with respect to x..
1-100/x^2=ds/dx
but ds/dx=0..
100=x^2 ..
x=10..
so y=10
Looks like it may be asking you to convert it to a fraction or percent. 7/20 or .35