A certain radioactive substance has a half-life of 10 years. If you start with 80 grams, how much will remain after 30 years?

Graph the function \( f(x) = \sqrt[3]{x - 4} \) and identify its domain and range.

Para la función \( h(x) = \sqrt{5 - x} \), determina el dominio y explica cómo lo encontraste.

Find the number that makes the ratio equivalent to \( 99: 18 \), \( 11: \)

Find the number that makes the ratio equivalent to \( 12: 81 \). \[ : 27 \]

What is the domain of this radical function? \( f(x)=\sqrt{x+1}-3 \) A. \( [3, \infty) \) B. \( [-3, \infty) \) c. \( [1, \infty) \) D. \( (-1, \infty) \)