Let f(x) = x4- 8x2 . find the relativeextrema of this function using the second derivative test.

How do you count the total number of atoms present on one side of a chemical equation?

The pressure in car tires is often measured in pounds per square inch (lb/in.2), with the recommended pressure being in the range of 25 to 45 lb/in.2. suppose a tire has a pressure of 27.5 lb/in.2 . convert 27.5 lb/in.2 to its equivalent in atmospheres.

Can any one me on number 4? i do know that it’s not a cause i gotten that wrong on the first try.