Evaluate the expression 4x - 3 when x = 2.

According to the order of operations, what is the first operation to perform in the expression 3 + 2 · 4²?

Evaluate (1/3)a + 5b for a = 9 and b = -2. Show substitution for both variables and step-by-step simplification.

Evaluate the expression 1/2 · (-4)² - 1/3 and present the exact fractional result.

Given f(x) = −3x² and g(x) = 2x³, define h(x) = f(x) + g(x). Evaluate h(2) by combining the functions and performing arithmetic in the correct order.