Laura is planning to buy two 5-lb bags of sugar, four 5-lb bags of flour, two 1-gal cartons of milk, and four 1-dozen cartons of large eggs. The prices of these items in three neighborhood supermarkets are as follows. Milk (1-gal carton) $2.99 Eggs (1-dozen carton) $3.49 Sugar (5-lb bag) Flour (5-lb bag) $3.79 Supermarket I Supermarket II Supermarket III $3.15 $3.29 $2.99 $2.99 $2.89 $2.79 $3.74 $2.98 $2.89 (a) Write a 3 x 4 matrix A to represent the prices (in dollars) of the items in the three supermarkets. A = (b) Write a 4 x 1 matrix B to represent the quantities of sugar, flour, milk, and eggs that Laura plans to purchase in the three supermarkets. B = (c) Use matrix multiplication to find a matrix C that represents Laura's total outlay (in dollars) at each supermarket. C =
Laura is planning to buy two 5-lb bags of sugar, four 5-lb bags of flour, two 1-gal cartons of milk, and four 1-dozen cartons of large eggs. The prices of these items in three neighborhood supermarkets are as follows. Milk (1-gal carton) $2.99 Eggs (1-dozen carton) $3.49 Sugar (5-lb bag) Flour (5-lb bag) $3.79 Supermarket I Supermarket II Supermarket III $3.15 $3.29 $2.99 $2.99 $2.89 $2.79 $3.74 $2.98 $2.89 (a) Write a 3 x 4 matrix A to represent the prices (in dollars) of the items in the three supermarkets. A = (b) Write a 4 x 1 matrix B to represent the quantities of sugar, flour, milk, and eggs that Laura plans to purchase in the three supermarkets. B = (c) Use matrix multiplication to find a matrix C that represents Laura's total outlay (in dollars) at each supermarket. C =
Chapter9: Sequences, Probability And Counting Theory
Section9.5: Counting Principles
Problem 52SE: A car wash offers the following optional services to the basic wash: clear coat wax, triple foam...
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