1. The vector u = 1225, 2445 gives the numbers of hours worked by employees of a temporary work agency at two pay levels. The vector v = 12.20, 8.50 gives the hourly wage (in dollars) paid at each level, respectively.
(a) Find the dot product u  v and interpret the result in the context of the problem.
(b) Identify the vector operation used to increase wages by 2%.
2. The vector u = 3140, 2750 gives the numbers of hamburgers and hot dogs, respectively, sold at a fast-food stand in one month. The vector v = 2.25, 1.75 gives the prices (in dollars) of the food items, respectively.
(a) Find the dot product u ∙ v and interpret the result in the context of the problem.
(b) Identify the vector operation used to increase the prices by 2.5%.