we know that
A relationship between two variables, x, and y, represent an inverse variation if it can be expressed in the form
or 
Let
x-------> the pressure in PSI
y------> the volume of the gas in cubic inches
In this problem we have the point 
so

Find the constant k

substitute the values of x and y


the equation is

therefore
<u>the answer is</u>

The magnitude of the exponent determines how many times you move the decimal to the left or right. Since the exponent is +4, move the decimal to the right 4 times to get 7090
Answer:
I did all the work and i believe the answer is 153
Step-by-step explanation:
9x5=45
12x9=108
108+45=153