Answer:

Step-by-step explanation:
Here,
f(x) = y

or , swapping x with y

now to solve for y we get

now we put f inverse x instead of y

I am done.
Answer:
B. or the second one
Step-by-step explanation:
Answer:
3.5
Step-by-step explanation:
the answer is 3.5 because when you divide 63 and 18 you get 3.5
Answer:
y>3
Step-by-step explanation:
9>-3y
3<y
y>3
The complete question in the attached figure
we have that
for c=5 and n=20------------> n*c=20*5=100
for c=2.5 and n=40------------> n*c=40*2.5=100
for c=2 and n=50------------> n*c=50*2=100
for c=1.25 and n=80------------> n*c=80*1.25=100
therefore
<span>the function that models the data is n*c=100
</span>
the answer is nc=100