Let r = ⟨7, 1⟩, s = ⟨–6, 2⟩, and t = ⟨–9, –3⟩. What is 10r + s – t?

Multiply each component of r by 10: 10r = ⟨70, 10⟩. Then add s and subtract t componentwise: ⟨70, 10⟩ + ⟨–6, 2⟩ – ⟨–9, –3⟩ = ⟨70 – 6 + 9, 10 + 2 + 3⟩ = ⟨73, 15⟩. The result is choice D, ⟨73, 15⟩.

AI-written and checked against the verified answer.