It would be $7.50 because 4 ounces equals $1 so 30/4 =7.5
Use a protractor. Place the whole on the dot of the angle and you should know how to do the rest.
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:
hmm
Step-by-step explanation:
If you divide.40 into 9 you will get 22.5 which is your answer