Answer:
3052. 08
Step-by-step explanation:
volume = 4/3πr^3
= 4/3π*(9)^3= 3052.08 in^3
A quadratic function models the profit of the company and the maximum/minimum value of the quadratic function occurs on its vertex.
The given function is:

The equation is already in standard form, the vertex of the parabola as seen from the equation is (5,12)
This mean if the company sets the price of socks to $5 they will earn a maximum profit which is $ 12 million
Sorry for the sloppy drawing but this is what it will look like
I did this on Snapchat btw
For this problem you have to isolate the variable. To do this you must inverse the operations. Multiply 18 by 5, then divide by 12 to get your answer of 7.5