0. Review of Algebra

Evaluate each expression for $p=-4$, $q=8$, and $r=-10$. $\frac{3p + 3(4 + p)^3}{r + 8}$

Simplify each expression. Assume all variables represent nonzero real numbers. -(p²q³/r³)⁰

Write each expression without negative exponents, and evaluate if possible. Assume all variables represent nonzero real numbers. (5t)^-3

Calculate each value mentally. (20^3/2)/(5^3/2)