If the pH balance for skin is 4.5 to 5.5 what is the answer if the equation is pH = -log(10)*H?

Question

College algebra sucks!!!!!
Looking for the pH factor of a substance either acidic or basic.
Show how to find the hydrogen ion content of the substance using the formula. Is my assig'n

Answer 1

4.5 pH: concentration of 10 to the minus 4.5 power.
5.5 pH: concentration of 10 to the minus 5.5 power.

Answer 2

To find the [H+], simply take the antilog of the negative pH. This is probably INV LOG on your calculator.

So if pH = 4.5, [H+] = antilog -pH or, on your calculator INV LOG -4.5 = 3.16 Exp -5

And if pH = 5.5, [H+] = INV LOG -5.5 = 3.2 Exp -6