Answer: first option
Step-by-step explanation:
Let's make the following conversion:
40 inches to feet (Knowing that 1 feet=12 inches):

The formula for calculate the are of a rectangle is:

Where l is the lenght and w is the width.
Therefore, when you substitute values, you obtain the following result:

Answer:
i would guese c
Step-by-step explanation:
If your asking to multiply 9x5 then the anwser is 45.
Scale factor is equal to 1/2, since the point went from 10 to 5