A human hair has a diameter of about 4 * 10 ^ - 3 inches. A fingernail is about 0.011 inches thicker. How thick is a fingernail? Write your answer as a decimal to 3 places. (1 point)
To find the thickness of the fingernail, we need to add the thickness of a human hair (4 * 10^-3 inches) to the additional thickness of the fingernail (0.011 inches).
Therefore, the thickness of the fingernail is 4 * 10^-3 + 0.011 = 0.015 inches. Answer: \boxed{0.015}.