Answer asap! an explanation is a must requirement in order to receive points and the brainliest answer. you.

Test options

slope
y=mx+b
m=slope
m=(y2-y1)/(x2-x1)
jillm=(22-11)/(2-1)=11/1=11
since no additional fee, b=0
y=11x is jill

trial and error tells us that
kara=9x+5 where 5=is if you have 2nd child

look at optons
A. kara is 14 dollars per hour, false , it is 9 dollar per hour
B. 11-9=2, false
C. fee for 2nd is 5 true
D. 4 hours, 11x=44=jill, 9(4)+5=41, kara, 44<41? false

C is answer