Beginning & Intermediate Algebra
Evaluate the expression 4x - 3 when x = 2.
Evaluate 2(x + 3) when x = -4. Apply substitution and the order of operations, being careful with negative numbers.
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.
A projectile's height is modeled by h(t) = -16t2 + vt + s. If v = 64 ft/s and s = 5 ft, compute the height h(2). Use the appropriate mathematical methods.
