Answer:
B: 76
Step-by-step explanation:
I have to put an explanation.I don't have an explanation.
Z

Z=kX
When x=6, z=18,
Finding value of z,
18=k*6
k=3
Z=3X
when x=10,
Z=3*10
Z=30
Part B;
Z

z=

Where x is a constant of proportionality,
when x=3, z=2
2=

a=3*2
a=6
When x is 13,
Z=
C. If the first coefficient is negative, then the graph opens downwards
The answer is 26/7 it may seem to small to be the answer but just simplified it