A piece of cardboard measuring 8 inches by 9 inches is formed into an open-top box by cutting squares with side length x from each corner and folding up the sides. Find a formula for the volume of the box in terms of x

V(x) =

Find the value for x that will maximize the volume of the box

x =

Math i have no idea how to do a and b

If a company produces x units of an item at a cost of $35 apiece the function c=35x is a of the total production costs

You just purchased two coins at a price of $670 each. because one of the coins is more collectible, you believe that its value will increase at a rate of 7.1 percent per year, while you believe the second coin will only increase at 6.5 percent per year. if you are correct, how much more will the first coin be worth in 15 years?