Question: A street vendor sells six items, with prices p1 dollars per unit, p2 dollars per unit, and so on. The vendor's price vector is p→ = (p1, p2, p3, p4, p5, p6) = (1.00, 3.50, 4.00, 2.75, 5.00, 3.00). The vendor sells q1 units of the first item, q2 units of the second item, and so on. The vendor's quantity vector is q→ = (q1, q2, q3, q4, q5, q6) = (43, 57, 12, 78, 20, 35). Find p→·q→ , give its units, and explain its significance to the vendor.